Each channel has identical functions:
The input signal's phase and level can be adjusted with the attenuverter, from amplification factor X-1 to X+1. Afterwards you can add a an offset voltage to the signal which ranges from -8V to +8V. LEDs indicate level and polarity of the signal (red = positive, green = negative)
If you set the jumper to MIX position the output of the upper channel will be mixed with the bottom channel's output.
per sub-unit: input, output
3U Eurorack module, 4HP wide, 32mm deep
power consumption: ~50mA