via this auction

'RMIF ELSITA'. It is a powerfull 4 channel analog drum synthesizer, produced in the USSR in 1980s. It has 4 identical channels (which can be used & edited freely). On every channel you can change: trigger signal sensitivity, tone, attack, release, tone\noise balance, filter, volume level. Each channel has trigger Input on a standart 1/4 mono Jack for 4 pads. It can be triggered from any drum pads like classic Simmons or modern Roland\Yamaha or any audio source - line outs of the drum machine or soundcard or CV Gate etc. The module has Audio Output (1/4 Jack) and Headphone Output (1/4 Jack). This is an armoured antitank piece of gear and the sound it produces is very unique! Can synthesize huge pallete of sounds - from modern punchy BD & SD to classic 808 or 909 subs or claps e.t.c.."