The 984 Four Channel Mixer is an AC coupled 4-input, 4-output matrix with bass and treble tone controls for each output channel. Each input has a separate attenuator for each of the four channels. Thus a mixer of 16 input attenuators provides maximum channel separation, or variable combinations of volume balance. Tone controls for each of the output channels can attenuate or emphasize bass or treble signals. Flat signal response is archieved with the control settings kept at "5" on the potentiometers. These are 2-pole active tone controls.

Input Impedance: 25k ohms
Output Impedance: 5k ohms
Inputs: Four input potentiometers per channel
Outputs: Four
Frequency Response: Audio only, AC couplet, DC and Low Frequencies are blocked.

Specifications:
Power: +12 (45mA), -12 (45mA)
Depth: 40 mm
Doepfer compatible