26 HP
30 mm deep
Current Draw
75 mA +12V
60 mA -12V
0 mA 5V

Module is available as a DIY project only.

This Module is discontinued.

Eurorack Mixer

SUM is a 26 HP 7 Channel Eurorack Mixer with EQ, Pan and Aux Send.

Each of  the 5 mono channels have a VOLUME, EQ, SEND and PAN potentiometer and may be MUTED with a switch. Additionally the GAIN can be adjusted using the little trim potentiometer located above each VOLUME pot. Turning the SEND pots will route the signal to the SEND jack in order to integrate external effects. The wet effect signal may be returned in stereo using the REL and RER jacks.

The EQ will boost high frequencies and cut low frequencies when turning the pots clockwise and vise versa turning them counterclockwise.

Channel 6 and 7 are made for stereo signals (left & right). Their VOLUME can be changed with the STL/R potentiometer.

The sum of all channels is available in stereo on jacks STL and STR and is also being routed to the STEREO OUT (large jack). The Volume of this output may be adjusted with the STEREO VOL potentiometer. This output is suitable for headphones.

● 7 Channel Mixer
● VOLUME, EQ, SEND and PAN for channels 1-5
● MUTE switches for channel 1-5
● 1 Stereo Input
● AUX Send and Return
● 1 Stereo Out (Headphone)
● Wrong Polarity Protection
● 3U Eurorack Module, 26 HP wide
● Power consumption: 75mA at +12 V and 60mA at -12 V

The module consists of two boards:
● Front PCB Panel
● Main PCB with all electronic components


submitted Oct 13th 2018, 12:48 by Stobbert | last Change Sep 7th 2020, 15:40 by Stobbert

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