Sequential Circuits 6-Track in very good condition. I had this synth completely gone through and refurbished a few years ago. All of the programming touch pads were replaced but a couple of the numbers you may have to press more than once on initial start up but everything functions normally after the synth warms up. Also has one chipped key noted in the last picture. Sequencer and arp work perfectly. This synth sounds amazing and works great. Hate to see it go as it was my first analog synth but don't have room for it any longer