3 of the 4 channels have an output that removes it from the mixer and allows it to become a standalone attenuator. Patching the individual output of channel 1, 2, or 3 will remove it from the mixer circuit. Channel 4 can not be removed from the mixer circuit, however if channel 1, 2, and 3 are all being used as attenuators, channel 4 is the only input remaining in the mixer allowing it to be used as a fourth attenuator.
channel 1-3: input and output
channel 4: input
one mix output
3U Eurorack module, 8HP wide, 20mm deep
current draw 20mA