The A-111-5V is a monophonic synthesizer voice in Eurorack format. The entire sound generation and all modulation sources are 100% analog. Basically it is a Dark Energy without cabinet and MIDI/CV interface.

The A-111-5 is equipped with an analog VCO with PWM, a low pass filter with linear (!) frequency modulation for great FM sounds. The VCA can be opened manually to let sounds through even when no key is pressed. This is handy if you want to use the A-111-5 as a filter. The modulation section consists of an ADSR envelope and 2 LFOs with switchable frequency ranges up to audio speeds.