I've got a vintage classic synthesizer module of the Roland JX-3P. Except the module has some cool features that the keyboard doesn't. The MKS-30/Planet-S is a MIDI rack module version of the JX-3P with some enhancements. It is an analog synth with two DCO's (digitally controlled oscillators) per voice, six voice polyphony, it responds to velocity, and has 64 internal and 64 cartridge memory patches. The typical assortment of analog filter, envelope, LFO and oscillator sections are here with easy and straight-forward programming. It can be controlled by the PG-200 programmer for easier use. The programmer works amazing well and just had a going over by a tech and had 4 pots put in. There's a couple of knobs missing. Easy to get tho if you want to. It's been an absolute delight to own this for as longs as I have, but it's time to let it go. $975 OBO or partial trade for Apollo Twin Duo Mk2 or?... Yamaha, Korg, Sequential Circuits, Emu, Prophet-5, ARP, Oberheim, Moog,