via this auction"This is the mid 70's Korg XP-30 Sigma Monophonic Synthesizer. Korg released this little gem in the mid 70's to huge acclaim- 30+ years later, it is still relevant.
Featuring 37 keys, 11 preset instrument voices, 8 preset synth sounds, 10 effect controllers, and dual joysticks, there's virtually no limit on what you can come up with here. There is a blend knob that allows you to choose between any variance of instrument and synth sounds. The joysticks contol vibrato/pitch and LPF/HPF. With all of this control at your fingertips you are able to access everything from cool vintage analog tones to special effects. This Korg is in excellent condition. The tops of the joysticks were broken off when we got it(common)- they have been glued on and are holding but the bottom part of the sticks is long enough that you can use them even without the tips. There is also what looks like a small piee of key padding sticking out above the low C key- affects nothing. All the keys and buttons work as they should. This is your chanc to get your hands on one of the coolest synths of all time- the 70's Korg Sigma XP-30."
