Tags: Preamp module

Notes: Module A-119 (External Input / Envelope Follower) is designed to allow external audio signals to be integrated into the System A-100. It comprises a pre-amp, envelope follower, and comparator.

The pre-amp has two inputs: an unbalanced input for line level signals, with a gain factor of from 0 to 20, and a balanced input with a gain factor of from 0 to 500, for insertion of low level signals, for instance from a microphone or electric guitar.

The Envelope Follower reads the signal level of the input, and puts out a proportional voltage as an envelope at its own output.

The comparator generates a gate signal whenever the input goes above an adjustable trigger threshold.

Three LED's help you keep track of overload, the envelope, and the gate signal.

Notes: Pico EF is Erica Synths' take on envelope follower module in 3hp! Pico EF features a preamp with +40dB gain (enough to boost even guitar and dynamic microphone signals for use in a modular system), envelope output with adjustable attack time and a gate output with adjustable threshold. The Pico EF can be used as a preamp, overdrive unit or for controlling VCFs with audio signal, or to use with external instruments to control your modular system in other creative and experimental applications.

Technical specifications:

Preamp boost: up to +40dB
Audio output level: 10Vptp
Envelope output level: 0 - +10V
Gate level: +5V
Power consumption: 25mA, -15mA
Module width: 3HP
Module depth: 35mm

Notes: ASCOLTA is a dual high fidelity input preamp with envelope follower and peak detector output for each channel.

Ascolta consist of two individual high quality preamp connected to an envelope follower and a peak detector output.

On the back of the module you can select the behaviour of its internal normalization when no cable is plugged into I2:

S: the first input I1 will accept stereo 3.5mm standard cables from any source and split L and R to output O1 and O2 respectively. This way you can directly amplify stereo signals without the need of external splitters and regulate the gain of each channel individually.

G: the second amplifier will double the amplification of the first totalling a gain range of 80dB - 10.000x.

Envelope E and peak P outputs are strictly related to the gain level of their corresponding amplifier and will follow the dynamic of any input plugged.

Features

Two high quality 40dB amplifiers.
Customizable internal normalization.
Envelope and Peak output following the input signal
Audio graded potentiometers.
"Whatever" power connector a.k.a. don't mind the polarity.

Technical Specs

Width: 4HP
Depth: 25mm
50mA +12V
30mA -12V