ADDAC 107 Acid Source, Eurorack Module, Monophonic synthesizer voice, VCO with sawtooth/triangle and square waveform and crossfader, Controls for rough and fine tuning, Multimode filter (low pass, band pass, high pass) with cutoff and resonance controls, VCA with adjustable input level and decay envelope, CV inputs with attenuator for pitch, cutoff and decay, Trigger and Accent inputs, CV output for internal AD envelope, Audio output, Current requirement: 80mA (+12V) / 80mA (-12V), Width: 9 HP, Depth: 40mm