Original model MidiMoog.. Not very many of these made. This was one of SE's first builds. These few MidiMoog's had an original vintage Moog MiniMoog OSC board.. this is one of those. It all works great.. Thesis Audio completely went through it a couple of years ago.. It is working and sounding great.. just like a vintage minimoog! In many ways its better than a vintage minimoog.. it has MIDI, it has LFO and Filter Aftertouch!!! And is very portable.. all with the Mini sound. A couple of things to note. There are scuffs and scratches around the body, The first WAVEFORM knob is a little loose from its post.. NOT THE POT.. just the plastic knob over the metal pot post.. needs a new set screw. And.. while its perfectly scaled and in tune across many octaves.. you may have to scale and tune it after transit.. takes 5-10 min and super easy.. tuning / scaling pots are accessed via the back panel with a mini flat head screwdriver. Might not need tuning when you get it, just stating for full disclosure. No Returns on this one.. too many out there that buy to salvage parts for their items... been there, done that.. not again. I can supply feedback on many other sites at your request.