SUM SUM

Dual Summing Mixer

SUM SUM consists of two rows of 6 inputs that are summed into one output each.
It can be used as a stereo signal summer or two mono signal summers, either audio or CV.
The internal gain of each row can be switched between Unity gain, a gain of 0.5 (-6dB) or
0.33 (-9.5dB) using convenient dip switches on the back of the module.

Features:
- 2x6 mono inputs
- 2x1 mono outputs

Functions:
- Can be used in a stereo signal path to sum up to 6 signals.
- Can be used in a mono signal path to sum up to 6 signals two times into two
outputs.

http://audiophilecircuitsleague.com/products/sum-sum.php