Doepfer A-138A Mixer Linear. A-138 a: potentiometers with linear response, so especially suitable for control voltage mixing. A versatile Eurorack mixer module for both audio and control voltage signals. Each of the four inputs features an attenuator, and a master attenuator allows precise output control, making it ideal for sending mixed signals directly to external mixers or amplifiers. Versions A-138A: Linear potentiometers, ideal for mixing control voltages. A-138B: Logarithmic potentiometers, optimized for audio signal mixing. Key Features 4-Channel Mixing: Mix audio or control voltage signals with precision. Master Attenuator: Controls overall output level. DC Offset Generator (Optional): Control In1 outputs ~0–5V when unpatched; can be disabled via jumper. Compact Design: 8 TE / 8HP width, 35 mm depth. Low Power Consumption: 10 mA. The A-138 series is a practical, compact solution for Eurorack users needing precise, low-noise mixing for audio or CV, with flexible options depending on the type of signal you’re working with.
