Korg Poly 800 with Moog Slayer Mod

“There is a little bit of fuzzy noise sometimes when you touch the volume or some of the mods.

Korg poly 800 with sequencer and Midi. Extra mods installed by the previous owner. Everything works, all the notes work. Comes with power supply. It’s in good condition. It has some scratches some scuffing but all in all it is a tough unit that works.

The mods consist of three knobs and two switches and gets the sound kind of distorted, fuzzy and changes the tone.

Original controls include DCO, VCF, pitch bend and master tune. Patches and sequencer are programmable.

Has a strap locks system so you can wear it like a keytar. It can also be powered by batteries if you don’t want to use the power adapter. ” Click here to visit listing on eBay

Korg Poly 800

“KORG POLY 800 IN NEAR TOO MINT CONDITION U CAN CHANGE THE PROGRAM UP AND DOWN BUT JUST MADE SYNTH SOUNDS .THINK U WILL NEED TO RELOAD THE SOUNDS BACK IN . VERY CLEAN KORG 800 ONE OF THE BEST I SEEN TEST WILL BATTERY ONLY ….OPEN TOO OFFERS… ” Click here to visit listing on eBay

Korg Poly 800

“I’ve had a bunch of these over the years but none as nice as this, fully working, no issues. I don’t know if the internal battery has been replaced so please consider that it may need doing in the future. Otherwise it’s good to go. No psu included, normal 9v adapter found on ebay.” Click here to visit listing on eBay

Korg Poly-800II

“This is Beautiful and Rare
KORG Poly-800 MKII
Analog Synthesizer, 49- Key Keyboard.
1986
Made in JAPAN
Excellent Professional Vintage Instrument.
Good Condition !
Has a few minor surface blemishes, but Nothing major.
Pretty Clean !
All knobs, buttons, sliders, keys, OS system
Tested and works Great ! New 3V Internal Battery.
All Keys works great ! Sounds Really Amazing !
Comes with a Power supply.” Click here to visit listing on eBay

Korg Poly 800 with Reversed Keys Project Machine

“You are bidding on KORG POLY-800 Synthesizer Keyboard. I have no idea if it’s working or not, do not have power cable to check with. Missing power button cover, please look at the pictures. I have no idea if anything missing inside or not, I did not open the item up. Missing box, power cable and manual. Please look at the pictures before bidding, you will get what you see in the pictures.” Click here to visit listing on eBay

Korg Poly 800

“VINTAGE ANALOG JAPANESE KEYBOARD/KEYTAR. KORG POLY 800. FRESH LITHIUM CMOS BATTERY. Recently serviced and loaded with factory sounds. Keys are in good shape with no discoloration and good action. All features function as intended, including save and load. Unit is used and shows signs of wear on the paint along the edges as is outlined in the pictures. Included is the original user manual, factory programming sheet, and a 9v 300mA power supply (radio shack circa 2002 not oem).”
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Korg Poly 800 II Project Machine

“I used to play this synth regularly and have owned it since the late 90s but when recently trying it, it only seems to power up using batteries (not included) rather than via a PSU. It produces sounds although doesn’t seem to have retained the patches and saving sounds hasn’t been tested.

Being sold as a project rather than working synth as I don’t have time to diagnose and sort out the repair and am having a clearout.” Click here to visit listing on eBay

Korg Poly-800

“Used vintage synth in good fully working condition.

A classic now, can be heard in use with many contemporary producers, a bit of a sleeper synth.
Easy to program, amazing musical possibilities.
Has the most recent EPROM / Firmware version factory installed.
Needs a 9V DC Centre pin negative power supply to operate, battery compartment not tested looks like it may have had a leak at some point.
Check Photo’s for condition.” Click here to visit listing on eBay

Korg Poly 800II

“Korg Poly 800 II, Korg Poly 800 mkII. I need to make room for another Synth. The internal battery has been updated with a new battery. The Keyboard bed has been cleaned and the interior circuitry has been cleaned. Factory presets have been restored VIA tape upload function. All features have been tested and confirmed to be working properly. The item is in very good cosmetic condition, with one small scratch on the top back. I am including the keyboard stand, a power supply, and a reprinted manual. This has been a studio only instrument, no gig use.” Click here to visit listing on eBay

Korg Poly-800

“Here is a great Korg Poly-800 Vintage Analog Portable Synthesiser. This is from the 1980s, has 49 Keys Works Perfect. I recently had it looked over by McCallister Audio in Champaign/Urbana. They provided a wall wart, switched out some jacks and he fixed a grounding issue. All presets work and can be saved. This is one I really wanted to keep, but alas, it is just too much for me. Take a look, this is super cool. So, you can say it has recently been serviced and checks out 100%. ” Click here to visit listing on eBay

Korg Poly 800

“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, the original cassette tape with all the default sound files, and the original instruction manual.” Click here to visit listing on eBay

Korg Poly 800II with Moog Slayer Mod

“Korg Poly-800 mkII with “moog slayer mod” which apparently means someone installed a cutoff and resonance knob at their expense on top (and killed the pitch bend in the process). Not a big deal to me because I never needed a “pitch bend”, but it only seems to work for up/down mod, not pitch bend, maybe I’m doing something wrong. Everything seems to work fine otherwise, although the power cable is a little wonky if you move it around and a small scratch near the LED. I just bought this but sadly I can’t get it to work with my midi adapter to use a librarian. I have enough other synths to keep me busy” Click here to visit listing on eBay

Korg Poly 800

” Used, but in good condition Korg Poly 800 Analog Synthesizer.Functions well. Scuffs and scratches on some keys and plastic. Shows normal signs of wear. Can operate with batteries (not included) OR 9 volt power adapter(not included).No built-in speakers. Must be used with headphones or amplifier. Has a rare worn O Masuko sticker and DR SOUND NY taped to side.1983 – 1987. Do not know if any Mitsubishi affiliation or just rare coincidence. Ask all questions and view all photos before buying. Thank you.” Click here to visit listing on eBay

Korg Poly 800 with Moog Slayer Mod

“This keyboard has been modified with both the ‘Moog-Slayer’ and ‘FM’ filter modifications*, providing real time patch performance capability that it previously lacked.

I am the original owner and this synth has not been abused. It is in perfect working condition with all control surfaces functioning normally, and there is no corrosion in the battery compartment. Always kept in a smoke free environment.

Included are all accessories pictured:

Korg Poly-800 synthesizer
Custom fit hard case
Single mono audio cord
MIDI cables
Power supply
Manual
Factory sound parameter sheet
Factory programmer cassette”
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Korg Poly 800

“Up for sale is a Korg Poly 800 with full Atomahawk upgrade in great condition technically and cosmetically.

The upgrade gives 84 additional parameters which transform this already beautiful synth into a wild sound design machine while still providing you with the original parameters.

Additional parameters include frequency modulation, super lfo, aggressive resonance settings and lots of really interesting additional waveforms and modulation routing options.

Also there is no need to replace the battery for patch storage as the upgrade takes care of all of that.

One minor issue is that the dco mod stick can stick periodically. I never use this so has never been a problem.

Comes with power supply.

This is overall a really good example of a poly 800.” Click here to visit listing on eBay

Korg Poly 800

“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.”

Click here to visit listing on eBay

Korg Poly 800

“Vintage KORG POLY-800 Polyphonic Synthesizer w/AC Adapter, Owner’s Manual, Stand & Cassette.

8 separately articulated voices
8 digital controlled oscillators
9 advanced 6-stage digital envelope generators
Double playing mode
64 different programs
Stereo chorus
Built-in polyphonic sequencer stores and performes up to 256 notes
Musical instrument digital interface (MIDI)
Digital access control
Chord memory
14 second tape interface
Noise generator
29 white keys and 20 black keys
Lightweight (10 lb) battery/AC operated
Serial No. 033874
By Keio Electronic Laboratory Corp., Tokyo, Japan

Comes with Quik Lok (Cam Recanati) stand, Owner’s Manual, 9 VAC adapter and preloaded sound data cassette. Previous owner printed out program names with information. ” Click here to visit listing on eBay

Korg Poly 800

“The unit has been thoroughly tested and is in excellent pre-owned condition as photographed. This is an earlier version and is ready to be played or modified/upgraded. No condition issues to note, this is a pristine example of this vintage synth in it’s original tour hard case which is also flawless. Made in Japan.” Click here to visit listing on eBay

Korg Poly-800

” Very good condition for its age, everything works, all keys are in good working order, all connections on the back are perfect working condition. The numeric buttons do double click sometimes but its not too bad if you use a light touch, perhaps would benefit from being cleaned somehow.

One small pin hole on the top left corner of the synth; which fortunately is where most people put the filter cut-off knob for the slayer mod.

This synth is un-modded, and includes 6 batteries which are essential to keep the patches loaded. Ideally somebody should add the battery mod and Moog Slayer mod for filter cut-off.” Click here to visit listing on eBay

Korg Poly 800

“Here’s a piece of history – a Korg Poly-800 in full working condition with original power supply, user manual plus it come in the original box. It’s even comes with strap buttons, so if you really want to, you can play it while moving around – if you really, really want to!! Cosmetically the unit is in great condition for its age.” Click here to visit listing on eBay

Korg Poly 800

“Up for sale is my Korg Poly 800. I believe this to be a very early production model because when I installed the internal CR2032 bettery, there wasnt even a symbol on the circuit board designating where its supposed to go. Other early models had the schematic symbol for the barrery, but no battery. Then later, they came with a battery.

Anyway when I got this it barely made any sound. I retrofitted a CR2032 lithium ion battery(still correct for this synth),did a factory reset and now it works great. There is a chip taken out of 1 key but it is cosmetic only. Also one of the black keys is less sensitive than the other keys but still plays just fine. Also at some point, someone stenciled the name “Johnny Hott” on the back. I found it too hilarious to dare remove it.” Click here to visit listing on eBay

Korg Poly-800II

“Korg Poly 800 II synthesiser. Condition is “For parts or not working”.
Listed for parts or not working
has 1 issue the EQ parameter does not work
otherwise ok
some age related wear ,a new 9v adapter will be included.
you can try out but please observe covid distancing and please bring your own headphones inc 1/4 inch jack”

Korg Poly 800 with Reversed Keys

“Works perfectly and sounds great
The number keys that are used to select the patch numbers can be a bit sensitive.
Sometimes you’ll press a key and it registers as two presses if you don’t take your finger off in time.
Maybe the keypad needs a clean. It hasn’t bothered me at all.
This is the version with the inverted keys.
No modifications, you still need the D type batteries to run the patch memory.

Cool synth, I just don’t use it very much.” Click here to visit listing on eBay