The A-122 is buit around the integrated filter circuit CEM3379 by Curtis which has been in used in synthesizers like the Ensoniq units ESQ1 and SQ-80 or the Sequential Prophet 200. This IC's brothers, the CEM 3372 and 3378 were used in the Prophet VS, Akai VX600 as well in the Oberheim units Matrix-12 and Xpander. You can expect classic 80s sound from this module.
It is a low pass filter with a slope of -24dB per octave, voltage controlled cutoff frequency and resonance. Latter goes up till oscillation and generates a sine wave then.
Audio input, audio output
two cutoff CV inputs: one with 1V/octave and one with attenautor
one resonance CV input
3U Eurorack module, 8HP wide, 40mm deep
20mA current draw