Korg

“Rare in this condition, really, very very good just a slight bit of wear front left, see pic. Not too many scratches either, a nice looking and sounding synth.

Installed new C batteries, has new mains adaptor. ” Click here to visit listing on eBay

“KORG POLY-800 Polyphonic Analog Synthesizer 80s midi VINTAGE SYNTH. Condition is “Used”. Shipped with USPS Priority Mail.” Click here to visit listing on eBay

“Korg Poly 800 Synthesizer. Condition is “Used”. Purchased new by seller in 1980s.

NOTE: This synth has a battery that is soldiered into motherboard that is no longer charged and must be replaced for full, original functioning.
Two broken white keys have been replaced many years ago. No other problems. Synth Includes all original paperwork; the never-used reprogramming cassette tape; and Roland AC/DC 9 volt output power supply.

Great synth that was used to help me learn to play songs and many guitar solos by programming passages into the sequencer, varying playback speed, and practicing along with synth. Never used at gigs or on stage.

In the current condition, synth will produce sounds, but it needs the motherboard battery replaced to get all features working and produce proper tones. Battery compartment for the six C-type batteries used for playing without power supply contains no batteries.” Click here to visit listing on eBay

“Korg Poly-61 Synthesiser.

Item is in great condition

Cones included with case and power lead

Fully operational.” Click here to visit listing on eBay

“Unit has the regular signs of wear and tear as highlighted in the photos. The joystick’s top little nub is missing, but that doesn’t affect functionality. Guitar strap knobs will be included in packaging. ” Click here to visit listing on eBay

“This Poly-800 has been been given a thorough checkup by our techs here at Mike & Mike’s Guitar Bar, with all contacts, switches, and sliders cleaned, and all functions working as intended. Cosmetic wear is limited to a few minor marks on the edges of the enclosure. The graphics are pristine and all of the original white slider tips are intact.

The original faux leather fitted zippered carry case is included.” Click here to visit listing on eBay

” Vintage Korg Poly 800 Keyboard Synthesizer – Good Condition. Condition is “Used”. Shipped with USPS Priority Mail. Does not include AC adapter but works great with D batteries. Has barely-noticeable magic marker on back (see pic).” Click here to visit listing on eBay

“Korg Poly 61. Condition is “For parts or not working”. This unit produces sound, but not all the functions work, so I am selling as is. It may be missing some screws. All the keys are good.” Click here to visit listing on eBay

” Korg Poly 61M Vintage Analog Synth with MIDI Excellent working condition Nice!. Condition is “Seller refurbished”

Unlike many Poly 61s that are out there, this one is not all bashed up. The body is in great condition, with only a few minor nicks, and the synth is in very good working form. It has never had a battery leak, so all the functions work perfectly, and I did the following to it, to get it in top shape:

– I replaced the original battery with a CR2032, in a battery holder on a longer set of wires to make changing it easy.

– I totally refurbished the keyboard, cleaning all the keys, cleaning all the contacts, and adding carbon discs to the contacts, as per the solution by Sounddoctorin.com. (this is a great solution for faulty contacts — look it up.) That brings all the keys to perfect working condition.

– I removed all the tactile button switches and replaced them with brand new ones (a lengthy and tedious task.) That solves the annoying problem of having to keep hitting the program buttons many times until they work, or having them double count because of contact bounce. Now all the programming buttons work flawlessly. There is a photo showing the new switches(blue) on the two switch circuit boards. My soldering skills are quite sufficient for this work.

– I cleaned all the pots to eliminate scratching noises and jumping values.

– I replaced any of the screws that were missing, and all the feet are there, too.

This is a really great sounding synth, with a pure analog voice signal, and very stable tuning thanks to the digital control of the oscillators. And with factory midi, it is just a dream to own. It is fully tested, and loaded with sounds from a file I downloaded onto my phone from the internet. There are lots of those out there, and it is easy to do. And of course, you can create and save your own sounds.” Click here to visit listing on eBay

“Unit has the regular signs of wear and tear as highlighted in the photos. The joystick’s top little nub is missing, but that doesn’t affect functionality. Guitar strap knobs will be included in packaging.

NOTE that this unit does not “remember” patch settings for longer than a few hours. I chalk this up just to its age – the battery pack in the back of the unit is supposed to power the system memory, but it doesn’t. I leave that up to someone more dedicated than me to fix. The unit is definitely a little fussy, as anything this age would be – I’ve had to open it up and blow it out several times in order to get consistent audio output. Pots are clean as a whistle, though. Sequencer is strong, MIDI functionality is great, and you can get some serious bass lines out of this instrument. I’m selling it to upgrade to other gear in my studio.” Click here to visit listing on eBay