The Doepfer A-138B Eurorack Synthesizer Module Vintage Edition is a 4-channel mixer, usable with either control voltages or audio signals. There are 4 inputs, each with its own attenuator, as well as a master attenuator so the mixer can be placed at the end of the audio chain (for example to interface directly with an external mixer or amplifier).

There are two versions of this module: The A-138A - Ideal for control voltage mixing, uses potentiometers with linear response & the A-138B - Potentiometers with logarithmic response, perfect for audio signal mixing.

The Vintage Edition has all the features of the original but apperars in the Vintage dark grey.

The main features of the Doepfer A-138B Eurorack Synthesizer Module Vintage Edition include:

• 4 Inputs Each With an Attenuator
• Master Attenuator
• Width: 403mm
• Depth: 35mm
• Manufacturer: Doepfer