Preamp+

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The Circuit Slices Preamp+ (CS044) is a dual-function module for Eurorack-compatible synthesizers. In this narrow module is a microphone preamp and an envelope follower with CV and gate outputs. Use this module to process acoustic sources or to control functions in a modular synthesizer using acoustic sound.

Features and Specifications for the CS044 Preamp+

All analog design using state of the art ICs and surface-mount construction

Microphone amplifier has a voltage gain of over 100 (+40dB)

Designed to use inexpensive Electret microphones

The Preamp output is “normal” patched to the envelope follower’s input

The follower can be used separately – patching to IN disconnects the preamp

Gain control uses a panel-mounted 9mm potentiometer with a heavy-duty knob

Jumper selectable pull-up resistor to power Electret microphones

Dual-color LED indicates output signal level: < 2V peak (green) and < 5V peak (orange to red)

Green LED above the GATE jack indicates when the GATE output is high (5V)

Envelope follower tracks the input’s peak level from 0V to 5V and up to 10V

Envelope follower outputs a GATE signal (5V) used to trigger other devices

Gate threshold approximately 1.5V at follower’s input

Includes power cable and case screws

Reverse power protection

Power: +12 VDC @ 40 mA, -12 DC @ 9 mA, using a standard Eurorack 10-pin power connection

Connections: Standard 3.5mm jacks

Depth: 30 mm

Panel width: 4 HP

List price $65