A-310 Hedphones amplifier module for Eurorack / Doepfer A100 system

From top:

– +5V/+12V/-12V power bus indication LEDs
– volume knob
– left channel/mono input jack (when right channel jack is not plugged-in left input works as mono input)
– left channel mult jack
– right channel input jack
– right channel mult jack
– 6,3mm / 1/4″ headphones jack

From 2018: internal jumper added allowing mono listening (jumper header set) keeping L/R signals and its mults unaffected so you can listen two signals (form L and R inputs) at one time monauraly (w. stereo headphones).

Width: 4TE/ 4HP/ 20mm
Depth: 38mm /1,5″ max.
Current: 25mA (50mA max. if heavy loaded by 8Ohm headphones/speaker)
Power cable included

Double check power connection before powering your system please.
„Red strip“ means -12V connector side in Eurorack standards.
In some power distribution systems connector key can be reverted. In this case cut connector key and plug power connector right way (with respect to red strip) or use different power cable appropriate to your power system.