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Synth modules

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2hp
Cat: 725426 Rel: 03 Apr 19
 
Melodic percussion generator
Notes: Bell is a melodic percussion generator based on modal synthesis. By synthesizing the vibrations of complex geometric shapes, Bell provides a simple interface for creating metallic sounds that can both emulate acoustic instruments, and defy physics. Its sonic palette includes numerous physical models that span the range of vibraphone, marimba, glockenspiel and Tibetan bowls. In addition, damping allows for the articulation of all voices, and enables drastically changing the tone of your patch with a single knob turn.

It's time to ring your Bell!
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 2 in stock $138.83
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2hp
Cat: 620659 Rel: 11 Aug 16
 
Envelope generator synth module in Eurorack format - 2HP wide
Notes: Envelope generator with linear and exponential shapes. CV over decay time and end of attack gate output.

Specifications

Max Power Consumption: 43 mA +12V, 16 mA -12V

Depth: 34 mm (skiff friendly)

Width: 2hp
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 1 in stock $120.81
2hp
Cat: 686019 Rel: 04 May 18
 
Looper module for Eurorack synthesisers - 2HP
Notes: Freez is a voltage controlled locked looper. It captures moments of audio in buffers, where they can be minced and mangled beyond recognition. Once frozen, adjusting size will cause pitch and timbre changes to the locked audio.

Adjusting the sample rate control will distort and decimate the incoming audio as well as warp the time domain of the currently locked buffer. From beat repeat to granular audio buffer, Freez will create new sounds and textures out of any input signal.
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 2 in stock $108.09
2hp
Cat: 652192 Rel: 06 Jun 17
 
Looper module for Eurorack synthesisers - 2HP
Notes: Freez is a voltage controlled locked looper. It captures moments of audio in buffers, where they can be minced and mangled beyond recognition. Once frozen, adjusting size will cause pitch and timbre changes to the locked audio.

Adjusting the sample rate control will distort and decimate the incoming audio as well as warp the time domain of the currently locked buffer. From beat repeat to granular audio buffer, Freez will create new sounds and textures out of any input signal.
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 2 in stock $108.09
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FORTHCOMING
2hp Grain Granular Processor Module (black faceplate)
coming soon $147.31
FORTHCOMING
2hp Grain Granular Processor Module (silver faceplate)
coming soon $147.31
2hp
Cat: 686020 Rel: 04 May 18
 
Versatile hi hat with six oscillator architecture
Notes: Hat is a hi-hat cymbal with a wild side. Finding something unique is easy with a blend of sounds ranging from robotic to metallic. At its core are three unique sound sources made up of six oscillators, a noise generator, and a number of filters. Sizzle affects each source independently, adjusting oscillator and filter frequencies, allowing for a broad range of sounds. In addition, separate trigger inputs for open and closed allow for a complete hi-hat pattern on a single module. No matter what situation it's in, Hat provides shimmering, metallic timbres for any percussive purpose.
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 3 in stock $119.75
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2hp
Cat: 675793 Rel: 26 Jan 18
 
Versatile hi hat with six oscillator architecture
Notes: Hat is a hi-hat cymbal with a wild side. Finding something unique is easy with a blend of sounds ranging from robotic to metallic. At its core are three unique sound sources made up of six oscillators, a noise generator, and a number of filters. Sizzle affects each source independently, adjusting oscillator and filter frequencies, allowing for a broad range of sounds. In addition, separate trigger inputs for open and closed allow for a complete hi-hat pattern on a single module. No matter what situation it's in, Hat provides shimmering, metallic timbres for any percussive purpose.
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 2 in stock $114.45
2hp
Cat: 686021 Rel: 04 May 18
 
Flexible kick drum synthesiser
Notes: Kick is a bass drum synthesizer with a dramatic timbral range. Its flexible synthesis engine ranges from 808 to IDM with its punchy kicks and smooth distorted tones. 1V/Octave tracking across five octaves allows for tonal sequencing of the entire frequency range. Drop a beat with Kick.
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 1 in stock $119.76
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2hp
Cat: 686026 Rel: 08 May 18
 
MIDI Eurorack module
Notes: MIDI is a plug and play solution for interfacing with your computer or MIDI hardware. Four modes provide monophonic, duophonic, dual mono, and quad trigger operation.

MIDI clock, CC messages, and note on messages are all easily accessible between the four modes. The status LED provides clear indication of MIDI data being received by the module. Class compliant MIDI device on Mac/PC/Linux. Get connected with MIDI.
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 1 in stock $100.68
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2hp
Cat: 706870 Rel: 15 Oct 18
 
Voltage controlled multi mode filter
Notes: MMF is an analogue, multimode filter with a 12dB per octave slope. Its sonic character swings all the way from classic low pass to squelchy acid lines. Simultaneous outputs of low pass, high pass, and band pass filter types are provided allowing for many variations of the input signal. Whether you're looking for smooth and creamy, or resonant and wild, MMF can go there.
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 2 in stock $102.79
2hp
Cat: 706868 Rel: 15 Oct 18
 
Voltage controlled multi mode filter
Notes: MMF is an analogue, multimode filter with a 12dB per octave slope. Its sonic character swings all the way from classic low pass to squelchy acid lines. Simultaneous outputs of low pass, high pass, and band pass filter types are provided allowing for many variations of the input signal. Whether you're looking for smooth and creamy, or resonant and wild, MMF can go there.
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 1 in stock $102.79
2hp
Cat: 718445
 
B-STOCK: Box opened, product in perfect working order
Notes: ***B-STOCK: Box opened, product in perfect working order***


MMF is an analogue, multimode filter with a 12dB per octave slope. Its sonic character swings all the way from classic low pass to squelchy acid lines. Simultaneous outputs of low pass, high pass, and band pass filter types are provided allowing for many variations of the input signal. Whether you're looking for smooth and creamy, or resonant and wild, MMF can go there.
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 1 in stock $100.77
2hp
Cat: 686030 Rel: 08 May 18
 
White noise generator synth module in Eurorack format - 2HP
Notes: Nse is a white noise generator. The sample rate of the noise can be adjusted allowing for a wide range of sounds all the way from white noise to aliased, low frequency rumble.

In addition to its normal operation, VCA mode is accessible where enveloped noise bursts are emitted upon receiving a trigger signal. This facilitates the quick and easy creation of hi hat, snare, and percussion sounds.

Whether you're looking for a traditional noise source, or a quick way to generate drum sounds, Nse offers a powerful, high quality solution.

Specifications:

Max Power Consumption: 35 mA +12V, 16 mA -12V

Depth: 34 mm (skiff friendly)

Width: 2hp
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 1 in stock $100.68
2hp
Cat: 620662 Rel: 11 Aug 16
 
White noise generator synth module in Eurorack format - 2HP
Notes: Nse is a white noise generator. The sample rate of the noise can be adjusted allowing for a wide range of sounds all the way from white noise to aliased, low frequency rumble.

In addition to its normal operation, VCA mode is accessible where enveloped noise bursts are emitted upon receiving a trigger signal. This facilitates the quick and easy creation of hi hat, snare, and percussion sounds.

Whether you're looking for a traditional noise source, or a quick way to generate drum sounds, Nse offers a powerful, high quality solution.

Specifications:

Max Power Consumption: 35 mA +12V, 16 mA -12V

Depth: 34 mm (skiff friendly)

Width: 2hp
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 1 in stock $100.68
2hp
Cat: 709207 Rel: 05 Dec 18
 
Compact sampler featuring Micro SD slot for easy sample loading - black faceplate
Notes: Play is a high-fidelity sample player with a full feature set.

Up to 32 samples can be loaded at a time and dynamically switched between using the file knob and associated CV input. Playback modes include one-shot, looping, or gated playback; all with extremely low latency. Transform your samples by pitching them up two octaves or down three octaves, all with a pitch knob that can be free running or quantized to semitones. The pitch CV input tracks volt per octave across its entire range and allows for musical sequencing of samples. Play ships with a pre-loaded SD card packed with loops, drum hits, and field recordings to get you up and running immediately.
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 5 in stock $140.95
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2hp
Cat: 709206 Rel: 05 Dec 18
 
Compact sampler featuring Micro SD slot for easy sample loading - silver faceplate
Notes: Play is a high-fidelity sample player with a full feature set.

Up to 32 samples can be loaded at a time and dynamically switched between using the file knob and associated CV input. Playback modes include one-shot, looping, or gated playback; all with extremely low latency. Transform your samples by pitching them up two octaves or down three octaves, all with a pitch knob that can be free running or quantized to semitones. The pitch CV input tracks volt per octave across its entire range and allows for musical sequencing of samples. Play ships with a pre-loaded SD card packed with loops, drum hits, and field recordings to get you up and running immediately.
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 2 in stock $140.95
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2hp
Cat: 714254 Rel: 17 Dec 18
 
Compact physical modelling synth module featuring Karplus-Strong based algorithms - 2HP
Notes: Pluck is a physical modelling synth voice. It uses the Karplus-Strong algorithm to create plucked string sounds. The dampening control sets the size of the string and allows for dramatic timbral shifts.

The decay control changes note length from percussive transients to infinite harp sounds. In addition, four voice polyphony provides complex layered tones; all from a single sound source.

Strum a new chord with Pluck.
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 1 in stock $135.65
2hp
Cat: 684048 Rel: 28 Mar 18
 
Karplus-Strong based physical modelling synth module - 2HP
Notes: Pluck is a physical modelling synth voice. It uses the Karplus-Strong algorithm to create plucked string sounds. The dampening control sets the size of the string and allows for dramatic timbral shifts.

The decay control changes note length from percussive transients to infinite harp sounds. In addition, four voice polyphony provides complex layered tones; all from a single sound source.

Strum a new chord with Pluck.
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 3 in stock $135.65
FORTHCOMING
2hp Sine Wave VCO Module (black faceplate)
2hp
Cat: 727389
 
Digital oscillator module with sub output & wavefolding - black
Notes: Sine is a harmonically pure VCO with two distinct outputs.

The primary output contains a perfect sine wave with a wide frequency range and pristine volt per octave tracking. The Sub output features two sine tones that can be blended together to achieve a mix of one octave below, or a fifth above the primary output's frequency.

In addition, both outputs have an internal wavefolder that adds harmonic content to the signal allowing for spectrally complex tones within a single module. Keep your tones pure (or not!) with Sine.
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coming soon $147.31
FORTHCOMING
2hp Sine Wave VCO Module (silver faceplate)
2hp
Cat: 727388
 
Digital oscillator module with sub output & wavefolding - silver
Notes: Sine is a harmonically pure VCO with two distinct outputs.

The primary output contains a perfect sine wave with a wide frequency range and pristine volt per octave tracking. The Sub output features two sine tones that can be blended together to achieve a mix of one octave below, or a fifth above the primary output's frequency.

In addition, both outputs have an internal wavefolder that adds harmonic content to the signal allowing for spectrally complex tones within a single module. Keep your tones pure (or not!) with Sine.
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coming soon $147.31
2hp
Cat: 686033 Rel: 04 May 18
 
Analog voltage controlled oscillator with CEM3340 based architecture
Notes: VCO is an analog voltage controlled oscillator based on the reissue of the legendary Curtis CEM3340 IC.

Many believe this chip to be the greatest sounding analog oscillator of all time. VCO features simultaneous triangle, sawtooth, and square wave outputs with linear FM, hard sync, and PWM capabilities. Accurate 1V/Oct tracking across 10+ octaves provides a huge frequency range for melodies or dramatic sweeps.

Add some analog warmth to your patches with VCO.
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 1 in stock $115.52
2hp
Cat: 680018 Rel: 12 Mar 18
 
Analog voltage controlled oscillator with CEM3340 based architecture
Notes: VCO is an analog voltage controlled oscillator based on the reissue of the legendary Curtis CEM3340 IC.

Many believe this chip to be the greatest sounding analog oscillator of all time. VCO features simultaneous triangle, sawtooth, and square wave outputs with linear FM, hard sync, and PWM capabilities. Accurate 1V/Oct tracking across 10+ octaves provides a huge frequency range for melodies or dramatic sweeps.

Add some analog warmth to your patches with VCO.
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 2 in stock $112.34
2hp
Cat: 686047 Rel: 04 May 18
 
Lush sounding, voltage controllable stereo reverb
Notes: Verb is a lush stereo reverb with a full feature set and superior audio quality. A wide range of reverb times take your sound from small room to never-ending concert hall.

CV over mix allows dynamic movement between the dry and reverberated sound, and the dampening control lets you dial in the perfect timbre for the wet signal. Whether you need a traditional reverb for an FX send or an esoteric sound design tool, Verb can take you there. Get lost in space with Verb.
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 3 in stock $104.91
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2hp
Cat: 704937 Rel: 01 Oct 18
 
Powerful, easy-to-use speech synthesiser & oscillator
Notes: Vowel is a speech synthesis and formant oscillator. It synthesises and approximates the human voice by generating vowel sounds. These can be manipulated to provide deep low baritones, or high-pitched squeaks. Two unique algorithms provide separate takes on this exciting synthesis method and allow for a multitude of talking synth sounds.
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 1 in stock $119.76
Cat: 717585 Rel: 06 Feb 19
 
Utility module to convert signals to Eurorack level - 6HP
Notes: The Listen IO is a simple module which gets signals in and out of a Eurorack system by converting to and from normal modular levels. The top section converts any external signal to modular levels by providing up to 30x gain (+30dB), allowing you to use table-top synthesizers, keyboards, phones/tablets, computers, toys, microphones, etc. in your patches. The bottom section does the opposite: modular signals are converted to normal line level signals. The bottom two jacks can be used as line outs or as headphone jacks, so you and a friend can listen in stereo at the same time.

Each section has two inputs and outputs for use with a stereo signal or two mono signals. An LED bar graph for each output shows the signal level and clipping.
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 1 in stock $104.91
Cat: 589508 Rel: 09 Dec 15
 
Power solution for eurorack systems - 30W
Notes: Row Power is a clean, regulated, and protected power solution for eurorack systems. Row Power 30 provides 30W of power, suited for any typical eurorack row (84HP to 168HP):

+12V @ 1.5A
-12V @ 750mA
+5V @ 500mA
Simply plug a universal power supply (laptop style) into either of the barrel plugs on the 4HP panel. Connect your modules via flying-bus cables or the Bus Stick.

Daisy-chain multiple Row Powers to use a single power brick for multiple rows (typically 3-5 rows per power brick). Each row will be independently regulated and protected for ultra-low cross-talk between rows. Rows can also be hot-swapped (plugged/unplugged without powering the whole system down).
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 2 in stock $103.86
Cat: 589506 Rel: 09 Dec 15
 
Power solution for eurorack systems - 40W
Notes: Row Power is a clean, regulated, and protected power solution for eurorack systems. Row Power 40 provides 40W of power, suited for up to two typical eurorack rows:

+12V @ 1.5A
-12V @ 1.3A
+5V @ 1.5A

Simply plug a universal power supply (laptop style) into either of the barrel plugs on the 4HP panel. Connect your modules via flying-bus cables or the Bus Stick.

Daisy-chain multiple Row Powers to use a single power brick for multiple rows (typically 3-5 rows per power brick). Each row will be independently regulated and protected for ultra-low cross-talk between rows. Rows can also be hot-swapped (plugged/unplugged without powering the whole system down).
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 4 in stock $138.83
Cat: 589485 Rel: 09 Dec 15
 
4-channel voltage manipulator synthesiser module - 12HP wide
Notes: The SISM is a 4-channel voltage manipulator that can scale, invert, attenuate, shift (dc offset), mix, split, and slice your CV and audio signals.

A plethora of red and blue LEDs (14) show exactly what each channel and output jack is doing: red = negative voltage, blue = positive.

Each channel is independent and has an input jack, output jack, a knob for attenuating/inverting (Scale), and a knob for applying positive or negative DC offset (Shift).

Four jacks on the bottom combine the four channels in different ways. Mix is a straight mix of all four shifted inputs, Switched Mix is a mix of all channels that have nothing plugged into the OUT jack, Positive Slice is the sum of all output voltages greater than zero volts, and Negative Slice is the sum of all negative voltages.

By Shifting some channels positive and some negative, the + Slice and - Slice jacks can be used as sub-mix outputs. Also, by running a slow triangle wave into one channel, the remaining channels can be made to "dirty pan" between the Slice jacks: the signals are half-wave rectified as they span between both outputs.

Channels 1+2 and 3+4 are normalized together on the input jacks, which is handy for splitting a signal into two or more altered forms. Jumpers on the back allow you to disable this normalization.

Each channel also has a jumper to make the Scale knob unipolar (no inverting, attenuate only). This is useful for mixing audio instead of CV. A breakout header allows for padding of the signal (useful for fine-tuning a precise voltage such as 1V/oct).

Input and Output headers for connecting to QCD, QPLFO, VCA Matrix, or other manufacturer's modules such as Toppobrillo Mixiplexer or Circuit Abbey Intermix.
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 1 in stock $136.72
Cat: 601498 Rel: 01 Nov 17
 
User-configurable, mix & CV utility module
Notes: The ADE-60 is a highly-configurable mixing, signal and control voltage utility with options for 2x gain, attenuversion and CV/biasing allowing users to create configurations that suit their own requirements.

Plugging a cable into any of the output sockets removes any of the previous signal inputs from the mix at the outputs that follow it, allowing the mixer to be used in any combination from a standard 4-input/1-output summing mixer to 4 individual 1-input/1-output attenuators or stand-alone CV sources with additional options for gain and attenuversion per channel.

Used in conjunction with the gain and attenuversion settings the CV/biasing option can provide CV in the following ranges on any and/or all outputs: 0-5V; 0-10V; +/-5V; +/-10V.
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 3 in stock $120.81
Cat: 637050 Rel: 22 Mar 17
 
Bipolar mixer, DC voltage source & linear DC-coupled VCA - dark edition
Notes: This useful module is a Bipolar Mixer, DC voltage source and Linear DC coupled VCA.

- With no input to channel 1 the Input 1 pot becomes a voltage source with a range of +/- 6V.
- The control pot and input for channel 4 can be switched to become an offset control and/or a second CV input for the VCA.
- Input 3 has 2x gain, so it can amplify lower level CV's too.
- All inputs are bipolar, which means that either non-inverted or inverted version of the input signal can be added to the mix depending upon the Input control being turned clockwise (non-inverting) or anti-clockwise (inverted). The 12'o'clock position is zero.
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 1 in stock $138.83
Cat: 637040 Rel: 22 Mar 17
 
Precision buffered multiple module with individual output trimmers - silver
Notes: This is a precision active buffer and multiple. This module has outstanding performance: it features very high input impedance, very low output impedance and an offset voltage of <1mV.

Not all active multi's are born equal, some designs do not fully solve impedance mismatch and tracking problems ..or they apply offset voltages to the output and in rare cases can cause more problems than they solve!

AJH Synth have added a very useful (and unique) feature to cure tracking problems: four of the five outputs can be adjusted up or down by +/-5% from the front panel, so that VCO's and VCF's that don't track 1V/Oct exactly can be easily compensated to track correctly without having to re-calibrate the VCO or VCF themselves.
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 2 in stock $104.92
Cat: 584248 Rel: 15 Apr 16
 
Dual channel stepped voltage source and adder synth module - 6HP wide
Notes: 'Beast's Chalkboard' is dual channel stepped voltage source and adder for your eurorack modular synthesizer system. It primarily is intended as a dual octave switcher for VCO's but has many other uses including sequence transposition, FM ratio creation, buffered CV distribution and VCO calibration.

Technical Specifications:

Supply: +/-12V (Reverse voltage & polyfuse protection)
Current Draw: ~30ma
Size: 6 HP
Depth: 22mm (including power header)
Offset Error: +/- 10mV
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 2 in stock $100.67
Cat: 688774 Rel: 31 Jan 19
 
Compact digital oscillator with a resolution of 16Bit/48kHz
Notes: The 'MCO' is a compact digital oscillator. It features a main 'morphing' wavetable output, an additional copy of this output with overlaid variable pulse width segments (ala Alpha Juno style saw wave pwm) and a sub square wave output an octave down to the main output. The waveform and pulse segment width and be both directly and voltage controlled. The pulse segment distribution can also be voltage controlled via the 'type' input.

Expect an early 90s slightly crunchy digital type sound (ala Ensoniq, Kawaii KX synths) rather than something striving for perfect analog emulation.
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 3 in stock $136.72
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Cat: 588590 Rel: 09 Nov 15
 
6 channel mixer synthesiser module - 5HP wide
Notes: ABC is a simple 6 channel signal mixer. It has 6 inputs - A,B,C,D,E and F - and two outputs - A+B+C - which is mixed in to the D+E+F output if nothing is inserted in the A+B+C jack. ABC is designed to mix audio signals, but can be modified to mix CV signals instead. There are 6 solder jumpers on the back side, which can be connected to turn the abc mix into a CV mixer.

There are also 3 jumpers on the back side which can be used to normalize inputs A to D, B to E and C to F. This is useful if you would like to use the abc mix as a 3 channel stereo mixer (using both outputs and having separate volume control for left and right channel).
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 3 in stock $102.79
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Cat: 588591 Rel: 09 Nov 15
 
Voltage controller state variable filter (VCF) synthesiser module - 5HP wide
Notes: Cinnamon is a very unique sounding filter. The presence of drive and character switches makes it a multi-flavoured spice for your sound !
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 1 in stock $130.35
Cat: 616305 Rel: 12 Jul 16
 
Guitar/instrument amplifier & interface for external effects processors like stomp boxes - 5HP wide
Notes: Hendrikson is a guitar/instrument amplifier and an interface for external effects processors like stomp boxes. The most unique feature is the mix output which is CV controllable crossfader between the signal that goes to the Output and signal that comes to the Input. This means that when used with external effects processor this gives CV control of one of the most important parameters - the Dry/Wet Mix. This is especially interesting when using with fuzz or distortion effects for waveshaping basic waveforms.

When Hendrikson is used just as guitar/instrument amplifier the mix out is in fact a VCA after the gain stage, so you can instantly create tremolo effects by plugging the CV to the MIX CV input.

Another great application of Hendrikson is CV controllable feedback loop of external effects chain. Simply route the signal from Mix Output back to the Output and listen what happens when the signal comes back thru the Input.
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 2 in stock $143.07
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Cat: 588622 Rel: 09 Nov 15
 
Quad trigger to solenoid motor driver synthesiser module - 5HP wide
Notes: SOLENOID can drive 4 solenoid motors with voltage directly from the power supply. Motor driving circuitry and CV input circuitry are optically isolated without any ground connection. Requires external power supply for driving motors.

Output pulse width a knob optimizes the trigger signals to be sufficient to deliver adequate signal for the solenoids. With shorter pulses, solenoids don't move in their full range, or move with less power. This can also be used for adjusting the dynamics.
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 1 in stock $108.63
Cat: 638002 Rel: 30 Jan 17
 
Multi-purpose synth module in Eurorack format
Notes: The Power Midi is a multipurpose module designed for small Eurorack systems. It contains a MIDI-CV interface and a power supply. In detail, MIDI data can be fed to the circuit using a DIN / mini jack adapter. On the output side, there are connectors for pitch, modulation, velocity and gate signals. The power componentry is fed by an USB power supply. A Flying Bus Board is used to serve other modules with electricity.

The Power Midi employs converters with 16 Bit resolution to generate control voltages. An adapter from DIN to mini jack is included with the module.

The power supply delivers up to 400 mA at +12 V and 300 mA at -12 V.

The manufacturer recommends to use a USB power supply with at least 2 A to operate the module.

ATTENTION: Before you connect the Power Midi to the USB port of a computer, it is very important to check its specifications!
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 1 in stock $104.92
Cat: 701540 Rel: 20 Sep 18
 
Saber SEM classic audio filter module 8HP
Notes: Saber by Delta Sound Labs is a reimagined variation of the pioneering 1970's era SEM filter by Tom Oberheim.
This is a truly classic audio filter reworked as a compact and 100% skiff-friendly 8HP module.

The original SEM (Synthesizer Expander Module) was one of the world's first all-in-one synthesizers and it's unique 12dB/Octave multi-mode filter, imparted unique character to anything it touched.
Saber by Delta Sound Labs remains true to this design but features modern touches such as buffered low-pass, high-pass and band-pass outputs, each of which can be used at the same time.
All in all, this makes for a really flexible, great sounding addition to any Eurorack system.
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 2 in stock $120.82
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quote 701540
Cat: 682313 Rel: 26 Mar 18
 
Vactrol-based multimode filter based on a schematic by Nyle Steiner, featuring separate inputs for lowpass, bandpass & highpass
Notes: This filter's unique feature is that different filter types are realized by injecting the audio signal at different points of the circuit. For this reason, the A-101-1 has three inputs with level control: one lowpass input which is normalized to the bandpass input, which itself is normalized to the highpass input. The level controls make it possible to mix the filters and to generate new filter types. e.g. with all three filter levels turned to maximum level you get a notch filter.

Furthermore, the cutoff frequency influences which filter type is "monitored". This way you can blend from LP over BP to HP with increasing cutoff, known as "frequency scanning". Interesting effects happen when three different audio signals are used because they are both morphed and filtered at the same time.

Vintage edition with black faceplate and custom knobs.
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 1 in stock $139.90
Cat: 692507 Rel: 19 Jun 18
 
MS20 low/high-pass filter - 14HP
Notes: Module A-106-1 is a unique low/high pass filter and has its origin in Doepfer's experiments to build an MS20 filter clone. In contrast to other filter designs, it has different audio inputs for low and high pass, but only one audio output. The type of filter (12dB low pass, 6dB high pass or any mix) is defined by the shares of the audio signal fed to the corresponding inputs. Even two different audio signals can be used as low and high pass input. A special feature is the polarizer at the high pass input that allows to add/subtract the high pass to/from the low pass share, leading to pseudo band pass and notch responses.

Another special feature is the clipping controls, which allow independent adjustment of the positive and negative clipping level. The resonance goes up to self-oscillation, but with a clearly different behaviour than on other filters. At certain resonance and clipping settings the self-oscillation generates rectangle or short sawtooth shaped pulses.

In general, the A-106-1 is a very strange and awesome filter and far away from being perfect (e.g non-linear control scale, self-oscillation with all sorts of waveforms except sine, a lot of roaring, rattling, noise or other unpredictable sounds at high distortion and resonance settings, high distortion or audio level overrides the resonance, significant CV feedthrough). But the A-106-1 has a lot of character - probably much more than any other filter of the A-100 - and is able to generate filter sweeps which are not possible with any other filter.
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 1 in stock $114.92
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Cat: 692508 Rel: 19 Jun 18
 
Multimode filter based on the filter circuit of the Oberheim Xpander - 12HP
Notes: Module A-106-6 is a multimode filter that is based on the filter circuit of the Oberheim Xpander. The module features 15 different filter types (those filters of the A-107 that were available in the Xpander) with 8 filters available simultaneously. The toggle switch Filter Group is used to switch between 2 filter groups.

These filter types are available:

- 1L (6 dB low pass)
- 2L (12 dB low pass)
- 3L (18 dB low pass)
- 4L (24 dB low pass)
- 1H (6 dB high pass)
- 2H (12 dB high pass)
- 3H (18 dB high pass)
- 2B (6 dB band pass)
- 4B (12 dB bandpass)
- 2N (notch)
- 3A (allpass)
- 2H1L (asymmetrical band pass made of a 12 dB high pass and a 6 dB low pass)
- 3H1L (asymmetrical band pass made of a 18 dB high pass and a 6 dB low pass)
- 2N1L (combination of notch and 6 dB low pass)
- 3A1L (combination of allpass and 6 dB low pass)

The module features voltage-controlled resonance. For filter group 2 (2L, 4L, 2B ...) even self-oscillation is possible.

All standard VCF controls are available: manual filter frequency control Frq, one control voltage input with attenuator (FCV2) and one without attenuator (FCV1, ~ 1 V/octave). In addition, voltage-controlled resonance with manual control (Q) and a CV input with attenuator (QCV) are available.

The circuit is based on a 24dB lowpass filter. The outputs of the four internal filter stages (i.e. the 6, 12, 18 and 24dB outputs) are mixed together with different levels and polarities to obtain 15 different filters. Because of this special circuit the outputs have slightly different levels and noise floor. This is caused by the different internal amplifications and numbers of stages that are required to generate the filter in question. If e.g. a filter is derived by one stage only (e.g. the 6 dB, 12dB, 18dB and 24dB low pass) the noise floor is smaller compared to a filter that is derived by a combination of all four filter stages.
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 2 in stock $134.59
Cat: 577769 Rel: 29 Nov 17
 
Standard VCO providing two CV inputs for pitch, an octave switch, four waveforms with separate outputs, pulse width modulation & hard sync - 10HP
Notes: Module A-110-1 is a voltage-controlled oscillator. This VCO's frequency range is about eight octaves (ca. 15Hz ... 8kHz). It can produce four waveforms simultaneously: rectangle, sawtooth, triangle, and sine wave (triangle and sine shapes are not perfect, see remark below). The output levels are typically 8Vpp for saw and rectangle, and 10Vpp for triangle and sine. The frequency or pitch of the VCO is determined by the position of the octave (Range) switch and tuning (Tune) knob, and by the voltage present at the CV inputs. Frequency modulation (FM) of the VCO is therefore a possibility. Footage (the octave of the fundamental) is set by the Range control in five steps, and Fine tuning controlled by the Tune knob by about +/-1 one semitone (can be modified for a wider range).

You can control the pulse width of the square wave either by hand, or by voltage control - Pulse Width Modulation or PWM.

For more detailed information please look at the user's manual A110_man.pdf. In addition, the A-110 service manual is available as an example for the A-100 service manual that is available at extra charges. This document describes also how to modify the sensitivity of the tune control, how to re-adjust the 1V/octave scale and the frequency offset (i.e. the absolute pitch). Such modifications should be carried out by experienced users only!

The core of the A-110-1 is a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by internal waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinite fast but takes a little bit of time the derived waveforms triangle and sine are not perfect! At the top of the waveform they have a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converters. The sine is derived from the triangle by a simple diode-based converter and the sine shape is not perfect (only a rounded triangle).

If a perfect triangle is required, the A-111-1 is recommended. For a perfect sine wave the quadrature LFO/VCO A-143-9 is recommended.
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 2 in stock $145.19
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Cat: 692512 Rel: 18 Jun 18
 
Basic voltage-controlled oscillator for the A-100 modular system
Notes: Module A-110-2 is a low-cost voltage-controlled oscillator. It's a slightly reduced version of the standard VCO A-110-1. Compared to the A-110-1, the A-110-2 has no sine output and the (expensive) octave rotary switch is replaced by a 3-position toggle switch. In return, the A-110-2 is equipped with an additional linear FM input and a soft sync input. A jumper is used to select the range of the tune control between about 1/2 octave and about 4 octaves. The width of the module is only 8 HP compared to the 10 HP of the A-110-1.

All other features are essentially the same as for the A-110-1.

Explanation of the jumpers and trimming potentiometers:

- JP2: CV connection to A-100 bus
- JP3: range of Tune control (installed = about 4 octaves, not installed = about 1/2 octave)
- JP4: AC/DC coupling of the linear FM input (installed = DC coupling, not installed = AC coupling)
- P5: 1V/Oct scale
- P6: frequency offset
- P7: high-end trim
- P8: adjustment +1 Oct. range switch
- P9: adjustment -1 Oct. range switch
- P10: temperature VCO heater

The core of the A-110-2 is - like the A-110-1 - a sawtooth oscillator (in contrast to the A-111-1, which is based on a triangle oscillator). The other waveforms are derived from the sawtooth by waveform converters. As the sawtooth reset (i.e. the back-to-zero slope) is not infinitely fast but takes a little bit of time the triangle is not perfect! At the bottom of the waveform it has a small glitch or notch that is caused by the sawtooth reset and cannot be eliminated by the waveform converter. If a perfect triangle is required, the A-111-1 is recommended.

The sawtooth output of the A-110-21 has a falling (or negative) slope. The front panel shows erroneously a rising (or positive) slope. This has no influence on the sound but becomes important when the module is used as an LFO or is mixed with the sawtooth output of another VCO.

The control voltage applied to the socket 1V/Oct is added to the control voltage coming from the bus (interruptible by removing the jumper JP2). Connecting a cable to the socket 1V/Oct does not interrupt the bus CV connection!
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 2 in stock $122.93
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Cat: 692516 Rel: 18 Jun 18
 
Thru-zero quadrature VCO with Sine/Cosine core - special edition
Notes: This analogue VCO is well versed in the art of deep and beautiful thru-zero frequency modulation, allowing the frequency to stop when CVs with 0V are applied, and even to go backwards when modulated with negative CVs.

The term "quadrature" refers to simultaneously available sine and cosine waves at individual outputs. The VCO is sine based i.e. no waveshaping is used to derive the sine; for that reason, the sound is really clear and shows a minimum of distortion and overtones.

The module has two control sections:

The exponential section consists of the XTune control, the 1V/Oct input and the XFM input with the corresponding attenuator XFM.

The exponential control voltage is the sum of these three voltages. The linear section consists of the LTune control and the LFM input with the corresponding attenuator LFM. The linear control voltage is the sum of these two voltages.

The main advantage of the A-110-4 compared to other Thru Zero VCOs is that the design uses a sine/cosine core. The sine/cosine waves are not derived from other waveforms (e.g. sawtooth or triangle) by means of waveshaping. Rather the sine and cosine waves are the core of the VCO which results in very pure waves with a minimum of distortion and overtones.

With it's both control possibilities, linear and exponential, as well as it's thru-zero ability, the VCO is perfectly suited for all types of FM applications.
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 3 in stock $137.77
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quote 692516
Cat: 671591 Rel: 29 Nov 17
 
Analog VCO/LFO module with wide frequency range - 4HP
Notes: The Micro Precision VCO is a space-saving and utterly precise analog VCO/LFO with a extremely wide frequency range, immaculate tracking over at least ten octaves and nearly perfect waveforms.

Basically, it's the same circuitry like the High-End VCO A-111-2 but with reduced functions and controls. It is suitable as a modulator for exact linear FM and much more.

The A-111-3 has two elements for setting the frequency: A switch selecting between LFO and VCO mode as well as a tune control with a jumper-selectable range:

- Jumper position 1: 16Hz to 20 kHz
- Jumper position 2: 16Hz to 70Hz
- Without jumper: 16Hz to 22Hz

The XM potentiometer can be used as a fine tune control as long as nothing is patched to the XM socket.

The oscillator has a frequency range of at least fifteen osctaves (0.0001 - 40 Hz in LFO mode; 0.5 Hz to 20 kHz in VCO mode) and offers perfect 1 V per octave tracking over ten octaves minimum, typically in the range of 20 Hz to 20 kHz. Frequencies below 25 Hz are visualized with a two-colour LED.

The 1V per octave input is accompanied by two FM inputs, one for linear and one for exponential frequency modulation. A jumper determines whether the module obtains pitch CV via the internal bus.

The VCO has a triangle core from which sawtooth, pulse and triangle are derived. The wave forms are almost perfect and sans glitches.

The pulse width can be set with a control from 0 to 100% and of course it can be modulated.

There is one input for oscillator synchronisation and its type, either hard or soft sync, is jumper-selected. Both types differ in sound with the hard sync being more aggressive and richer in harmonics.
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 2 in stock $145.19
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Cat: 692518 Rel: 18 Jun 18
 
Analog VCO/LFO module with wide frequency range - 4HP
Notes: The Micro Precision VCO is a space-saving and utterly precise analog VCO/LFO with a extremely wide frequency range, immaculate tracking over at least ten octaves and nearly perfect waveforms.

Basically, it's the same circuitry like the High-End VCO A-111-2 but with reduced functions and controls. It is suitable as a modulator for exact linear FM and much more.

The A-111-3 has two elements for setting the frequency: A switch selecting between LFO and VCO mode as well as a tune control with a jumper-selectable range:

- Jumper position 1: 16Hz to 20 kHz
- Jumper position 2: 16Hz to 70Hz
- Without jumper: 16Hz to 22Hz

The XM potentiometer can be used as a fine tune control as long as nothing is patched to the XM socket.

The oscillator has a frequency range of at least fifteen osctaves (0.0001 - 40 Hz in LFO mode; 0.5 Hz to 20 kHz in VCO mode) and offers perfect 1 V per octave tracking over ten octaves minimum, typically in the range of 20 Hz to 20 kHz. Frequencies below 25 Hz are visualized with a two-colour LED.

The 1V per octave input is accompanied by two FM inputs, one for linear and one for exponential frequency modulation. A jumper determines whether the module obtains pitch CV via the internal bus.

The VCO has a triangle core from which sawtooth, pulse and triangle are derived. The wave forms are almost perfect and sans glitches.

The pulse width can be set with a control from 0 to 100% and of course it can be modulated.

There is one input for oscillator synchronisation and its type, either hard or soft sync, is jumper-selected. Both types differ in sound with the hard sync being more aggressive and richer in harmonics.
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 1 in stock $145.19
Cat: 727863 Rel: 18 Jun 18
 
B-STOCK: Box opened, product in perfect working order
Notes: ***B-STOCK: Box opened, product in perfect working order***


The Micro Precision VCO is a space-saving and utterly precise analog VCO/LFO with a extremely wide frequency range, immaculate tracking over at least ten octaves and nearly perfect waveforms.

Basically, it's the same circuitry like the High-End VCO A-111-2 but with reduced functions and controls. It is suitable as a modulator for exact linear FM and much more.

The A-111-3 has two elements for setting the frequency: A switch selecting between LFO and VCO mode as well as a tune control with a jumper-selectable range:

- Jumper position 1: 16Hz to 20 kHz
- Jumper position 2: 16Hz to 70Hz
- Without jumper: 16Hz to 22Hz

The XM potentiometer can be used as a fine tune control as long as nothing is patched to the XM socket.

The oscillator has a frequency range of at least fifteen osctaves (0.0001 - 40 Hz in LFO mode; 0.5 Hz to 20 kHz in VCO mode) and offers perfect 1 V per octave tracking over ten octaves minimum, typically in the range of 20 Hz to 20 kHz. Frequencies below 25 Hz are visualized with a two-colour LED.

The 1V per octave input is accompanied by two FM inputs, one for linear and one for exponential frequency modulation. A jumper determines whether the module obtains pitch CV via the internal bus.

The VCO has a triangle core from which sawtooth, pulse and triangle are derived. The wave forms are almost perfect and sans glitches.

The pulse width can be set with a control from 0 to 100% and of course it can be modulated.

There is one input for oscillator synchronisation and its type, either hard or soft sync, is jumper-selected. Both types differ in sound with the hard sync being more aggressive and richer in harmonics.
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 1 in stock $147.68
Cat: 703567 Rel: 08 Oct 18
 
Voltage-controlled multi-mode filter - 8HP
Notes: Module A-121 is a voltage-controlled multi-mode filter with a cut-off slope of -12 dB / octave. Four simultaneous outputs are available, each with different characteristics: low-pass, band-pass, high-pass and notch (or band reject). The cut-off frequency determines the point at which the respective filter effects appear. The frequency can be adjusted manually, or by voltage control (Filter modulation, for instance by an LFO or ADSR). Two CV inputs are available, whose control voltages are summed. Resonance (Emphasis or Q) can be adjusted manually, or by voltage control, right up to self-oscillation, in which case it will behave like a sine wave oscillator.

Technical notes: Module A-121-2 is the successor of the obsolete module A-121. But the circuitry is totally different from the A-121 which used the obsolete CEM3320 filter circuit. The sound of the new module A-121-2 is identical to filter of the Dark Energy II but has been expanded by the voltage-controlled resonance feature.
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 1 in stock $120.81
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