“Vintage KORG POLY 800 Korg Polyphonic Analog Synthesizer – Untested. I do not have the power adapter to turn on and test this unit. I am not a musician. This was purchased an estate sale. I have no idea of nor do I make any claims as to the working or nonworking condition of this unit. Again completely untested, please bid accordingly. ”
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“Cosmetically the unit is in good condition for its age. It shows a small amount of wear like some scratches around the corners however nothing major. Please see photos.”
“Korg Poly-800 in good used shape.
“Korg Poly-800 Very Good Condition Fully Tested. Condition is Used. Comes with original power adaptor and poly 800 korg preset cassette”
“KORG poly 800. Condition is Used.”
“Korg Poly 800 VCF, RES, FM, Filter switch 12/24 db MOD Controllers
” Unit was powered on but does not have any sound. being sold as is for parts or repair. no power supply, appears to have rust or something in battery compartment. has scuffs and scratches.”
“This listing is for one Korg Poly-800 MK1 synthesizer. It is not currently powering up and I am not sure why. Physically is seems ok but has some scratches/marks (see pictures). Listing does not include any cables. ”
“Korg Poly-800 8 Voice Polyphonic Analog full working Synth with filter mod . Condition is Used.”
“Korg Poly-800 synthesizer keyboard for parts or restoration – untested – sold as is.
“Vintage Korg Poly 800 Polyphonic Analog Synthesizer in VERY GOOD WORKING COND!. I purchased this unit back in 1982 and has worked great since. It is missing the battery cover on that back and thE power supply is not original. I had an extra sega genesis power supply and it powered right up. This is a really nice keyboard. Has some cosmetic imperfections but overall very good condition, considering its age. ”
“This is a used unit like New rarely used
“Vintage Korg Poly 800 Polyphonic Analog Synthesizer No Cord
“Single original owner. Used over a two month period in 1986 for a total of 28 hours.
“Korg Poly-800 Midi Synth Strap-on Keyboard
“Vintage Korg Poly 800 Polyphonic Analog Synthesizer No Cord
“This synth has been tested and sounds great!
“Korg Poly-800 Analog Synthesizer for Parts or Repair. Unit powers up and plays. Bend function does not seem to work and the joy stick is missing its tip. I don’t understand all of the functions so I’m selling it as is for repair. Has some scuffs and marks as can be seen in pics. ”
“You are bidding on Korg Poly 800 Analog Polyphonic Sinthesizer. I have no idea if it’s working or not, do not have a power supply to check with. Missing a box, power supply and manual. Please read and look at the pictures before bidding, you will get what you see in the pictures.” 
“- VERY Good Overall Condition
“Korg Poly 800 with original manual, programing tape, Korg power supply, keyboard stand. 49 keys. I am the original owner of this keyboard.” 
“Vintage Korg Poly-800 Synthesizer w/ Case, Stand, Power Supply, Manual
“Up for auction is this small keyboard, tested and IS NOT working good, turns on keys are in good conditions, all buttons look ok, the sound is kind of fuzzy/distorted, the battery compartment has light rust on it, the banks change but again, the sound is not good, it will need some repairs to make it sound like it should,”
“- VERY Good Overall Condition
“Volume pot a bit scratchy; otherwise excellent condition through and through.”
“It is sold for part because it is untested
“Volume pot a bit scratchy; otherwise excellent condition through and through.” 
“Volume pot a bit scratchy; otherwise excellent condition through and through.”
“Volume pot a bit scratchy; otherwise excellent condition through and through.” 
“Previously owned. For parts or repair. Power supply not included”
“Bekannte defekte
“Up for sale is a Vintage 1980’s Korg Poly-800 Polyphonic 49 key Keyboard Synthesizer With Original Korg Power Brick Part No. KAC-302 Date Code I A 85 Made In Japan. It is in Very Good Condition and it Works Great.”
“Everything works except for one of the high F# keys.”
“Just Serviced with new backup battery .. all working as it should .
“1986 Korg Poly-800II Programmable Polyphonic Synthesizer, tested-works awesome !, hardly ever used, has the original case-manual-tapes-power supply-etc., great condition.”