Module A-103 is a voltage controlled low pass filter with 18dB/octave slope. The circuit is based on a modified transistor ladder (Moog ladder) and is a reproduction of the legendary TB303 filter.
As for the rest the A-103 is identical to the A-120 Moog low pass filter (same controls, inputs/outputs) only the filter sound is different.
The English user’s manual is available on our web site as pdf file: A103_man.pdf
Width: 8TE / 8HP / 40.3 mm
Depth: 55 mm (measured from the rear side of the front panel)
Current: +30mA (+12V) / -10mA (-12V)