“You are bidding on a Korg Poly-800. This is a classic analog synth from the 80’s. I am the original owner. I bought it brand new back in 1985, and it has always been kept in a dry, smoke-free environment. All the keys still have their original spring action and work perfectly. The joystick and all the buttons work perfectly as well, and the display is nice and bright with no faulty segments.
Cosmetically, the synth is in great shape for its age. There are some minor scuffs and scrapes, the worst of them being along the rear of the unit. The only other cosmetic blemish of note would be the bezel surrounding the joystick. At one point, the adhesive lifted and the bezel got snagged causing it to crack (see photos). I have taped it back down with some double sided tape, but it is starting to lift back up. It should probably be glued down, but I’ll leave that to the new owner.
I am including the original Korg power adapter and the original casette tape with all the default sound files.”
” Used, but in good condition Korg Poly 800 Analog Synthesizer.Functions perfectly. Scuffs and scratches on some keys and plastic. Shows normal signs of wear.Manual included but no AC adapter. Can operate with batteries (not included).No built-in speakers. Must be used with headphones or amplifier.I tried unsuccessfully to remove tape indicating keys. Only purchase if you have a proven method of removing tape adhesive or it doesn’t bother you that it’s there to stay.Highest black key (A#) is not quite level. Brace/bracket was fabricated inside to raise key to almost level. You would barely notice unless you opened the synthesizer.” 
“Korg Poly 800 Synthesizer With Black Case. EUC. Works with battery or A/C (power plug included). Battery off boarded from PCB.”
” korg poly 800 mk2 digital/analogue synthesizer. This synthesizer sounds fantastic. It has 2 DCOs and a noise generator each with their own ADSR envelope generator and most importantly it has an analogue VCF filter which makes this instrument sound great. It also has onboard digital delay, basic step sequencer and a MIDI interface so that you can sync it it sequencers, drum machines and computers with midi compatibility. Everything works on this unit except for 2nd D# key for some reason. The D# note still sounds if you play it from another controller keyboard or a sequencer or using the pitch bend but the actual key doesnt work when you press it. All other switches, sliders, knobs and keys work. It is 8note polyphonic. It comes with a real manual that you can actually read and it still has the original data tape cassette with it for factory sounds, though I have never used the tape and can’t verify if the cassette works or not. It still has the original box. I have not got a power adaptor for it but it uses the standard guitar stomp box 9V type. The original korg one broke many years ago and I just use my guitar stomp box adaptor with it now. This was the first synth I ever bought back in the 80s when I got my first job. I sampled it to death! Sorry to see it go. ” 
“Korg Poly-800 II Analog Synthesizer Keyboard Does Not Power On. Condition is “Used”
” Used, but in good condition Korg Poly 800 Analog Synthesizer.
“KORG POLY-800 Vintage Analog Synthesizer In Great Condition In Every Way. Condition is “Used”” 
“korg poly 800 with moog Filter Mods. Condition is “Used”. Fully working except for internal sequencer clock- sequencer works fine with an external midi clock, I haven’t investigated why this is because I always play it manually or sequence with a computer. A few cosmetic marks detailed in the photos. These weren’t made by me!!
“KORG POLY-800 Analog Synthesizer Polyphonic Keyboard – AS IS