“Nice little synth becoming more popular now. All working.
It has tuning stability with DCO’s but an analog filter.
Built in Delay.
Comes with manual and generic power supply.
I have lots of other music gear for sale.
Selling elsewhere so reserve the right to cancel listing.
Thanks for looking.” Click here to visit listing on eBay
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Korg Poly 800II
” 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”
“Korg Poly-800 II Polyphonic Synthesizer. Condition is “Used”. Shipped with USPS Priority Mail.” 
“Korg Poly 800 MK2 Condition is For parts or not working. Powers up… but when you play a key it sounds like it is playing all the sounds at once. Was told by local elections guy it need a new mother board… other than that it looks ok…” 
“Vintage Poly 800 Mk2 in excellent working condition. Comes with original manual and aftermarket power supply” 
“This synth is in great working condition! Please see photos for full cosmetic details.
“Korg Poly 800 MK2 Condition is For parts or not working. Powers up… but when you play a key it sounds like it is playing all the sounds at once. Was told by local elections guy it need a new mother board… other than that it looks ok…” 
“Hi, you are buying a Korg Poly-800 II Polyphonic Synthesizer. In good condition, do not have a plug for it, Powered On and showed letters on LCD when I tried it with batteries, but couldn’t change lcd besides the 2 screens shown and do not know how to test this, so in that case it is being SOLD COMPLETELY AS-IS w/ NO RETURNS. Pictures are of the actual Korg Poly-800 II synthesizer you will be receiving, no battery cover, No plug or manual included. In hand ready to ship. Free Local Pick-Up Is available for anyone looking to save on shipping charges.” 
“Korg Poly-800 mkII
“Korg Poly-800I II Polyphonic Synthesizer w/ Power Supply and Preload Data Tape. Condition is Used. ” 
“1985 KORG Poly-800II Digital Analog Synthesizer +Sequencer Effects Poly 800 MkII
“Works well and the lights are bright; it is missing the rear battery cover. Please look at ALL of the photos as they are a part of the description.”
“This item is being relisted due to a time-waster but, surprisingly, 100% feedback pseudo-buyer.
“Korg Poly 800 II . Condition is Used. Programmable analogue vintage synthesizer. May have a key or two that might need sprayed, other than that it works good. There is no power supply, been using one similar to it from another keyboard to operate it which was similar to the original one. Bought it wanting to learn how to play, but wasn’t interested in it. ”