The Red Square is a semi modular monophonic analog rack mount synth with 1/4" patch points. There are two heavy sounding oscillators, LPF, two envelopes, LFO, sample & hold, and some other built in utilities. There is normalling but the synth really encourages patching with things like the second oscillator and envelope being disconnected by default.
This synth is in good working condition with some light cosmetic damage like worn paint on the edges and a few stickers on the sides. Some of the pots are a little scratchy as well but function as intended and just need to be worked a bit.