“Another hidden treasure from uncle Freddie’s stash… It powers up and plays, not sure if all controls work- I’m not into synths/keyboards, but I did get some fun sounds through the headphone output! It needs a thorough cleaning and restoration/repair or is perfect for spare parts for your Delta. The joystick is broken off but is still functional, three slider knobs are missing, and the sliders and pots and could stand to be lubricated, tightened and/or replaced” Click here to search for synths on eBay
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“This is a Korg poly 800 in pristine condition. Comes with its adapter and very thing works. No noise no problems.” 
“For sale is a Korg Poly-800 in perfect working condition.
“Excellent working condition, all buttons and joystick work as they should. Some visible wear from use but always kept in temperature-controlled, smoke-free studio.” 
“Verkaufe hier meinen Mini Korg 700s,
“If you’re looking at this, I don’t need to intimate how great this synth is – the modulation capabilities are unique (particularly with the LFO trick, which this unit performs easily – I will show you how, if you pick her up).
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“Selling my Korg m500 , just seen one go for 395
“Up for sale the amazing Korg MS 20 from the late 70s. Fully functional, in good cosmetic condition. All the buttons, patches and keys work as they should. I used this synth for overdriven leads, baslines, cosmic fx and somethimes ran samples trough the filter to add some character. I have played the new ms20 and it sounds too clean and the filter does not scream like older version but not to say the new one is a bad synth. That’s why I prefer the old ms 20. I’m selling it because I need to move out and need money to cover my bills. So take advantage to own the true iconic ms 20. It comes with the european plug and psu converter to be used in usa. ” 
“This is Korg’s Polysix synthesizer from 1981. A knob for everything and no menus. Good physical condition except for the left rear corner. See photos. I built a new KLM-367 programmer board for it since the old one had the usual battery leak damage. Only the 8048 microcontroller and the Molex connectors were reused from the old board. Looks great, sounds great, everything works.”
“When I bought this synth in 1999, it was already 18 years old. At the time, it was in perfect condition, save for a couple dings in the wood. I used this in several studio albums and it also made more than a few trips to the stage. For about 8 years this was my go-to vintage synth.
“Up for sale is rare Korg X-911 vintage analog guitar synthesizer.
“This synthesizer is in good used condition, with some minor scuffs and scratches across the body. Power cable is hardwired. Pitch/Mod stick works as expected. Every key produces sound. Minimal testing of sound shaping functions though all seems to work. There may be issue of which we are unaware due to not being able to fully test this unit. Because of any unforeseen issues, being listed as Parts & Repair.”
“The MS2000R is, of course, the rackmount version of this beast. Although there is no keyboard and no real need for one, the 16 function buttons on the front of the unit can be switched into “Keyboard” mode in which they function as keys, mainly for demoing sounds while you’re programming it. This is a really great feature since most rackmount synths either don’t allow you to hear your progress from the actual unit or they only feature a one-note demo button to hear your sounds. The MS2000 is truly a well thought out instrument for musicians of any level looking for classic and new sounds within a quality digital synth with a sleek vintage look that’ll turn a few heads!” 
“For sale is one Korg MS2000 44-key analog modeling synthesizer. This is a digital synthesizer which was designed to emulate the sound, features, and control/modulation possibilities of a classic analog synth. As with many Korg products this synthesizer is very well built and includes a number of innovative features and surprisingly flexible routing (… and it sounds amazing!). It has been well cared for in my smoke-free home studio for many years. It has never been abused or gigged although I’m sure it would do fine if you were to bring it on the road.
“For the vintage keyboard nerd- I mean enthusiast. Lots of quirky sound-shaping knobs and buttons – throw some mild distortion and delay on it to make your tracks and live performance very unique.”
“Overview
“Korg KR55 Analog Rhythm Machine works perfect ! Sounds AWESOME
“Later version with trigger button. No corrosion. Keyboard connections re-soldered. Modulation wheel works. The switched jacks all work. Pots are mostly quiet.
“FOR SALE RARE VINTAGE ANALOG VOCODER Korg VC-10 in VERY GOOD USED condition ( PLEASE LOOK ON A PICTURES) . This from my studio incl original Mic and user manual, original.
“Korg KR-55B – Vintage Analog Rhythm Machine and Foot Pedal
“Korg DW-6000
“Korg M-500 Micro Preset Analogue Synth
“polyphonic analogue synthesiser in good working condition.
“Up for purchase is this Korg DW-8000 Programmable Digital Waveform Synthesizer that is in excellent working condition. This synth was just cleaned inside and out and serviced. The keybed was removed and cleaned including the keys; keys still make that clacky sound which is common on a vintage DW. A new RAM battery was installed and the factory patches were reloaded. A new volume slider was installed. The finish shows some wear and a few scuffs but it really looks good overall. Fully tested and works/sounds great. Comes with power cord.”
“Vibey, underrated drum machine with killer snare & well balanced kick.
“I do not want to sell this.
“Item is in good working condition, no defects.”
“This Korg Micro Preset M500 comes complete with its original manual and nine patch sheets that fit over the the controls to create specific sounds. There are a few blank ones that you can use to create your own.
“This item is being sold by Sound Core Music in Carbondale Illinois.
“NICE KORG MS2000R FROM MY STUDIO
“A very special analog monophonic synth from 1979. There were only a 1000 of these units made ever. It is said to be Aphex Twin’s favorite synth. It is rare to find one in such a great condition as the one I’m selling.”
“In very good condition for its age. Has some minor scratches and cosmetic wear but everything on the unit works. All keys, knobs and switches are responding. This unit has been serviced. It also comes with the original mic.
“UP FOR SALE I HAVE AN USED KORG MS-2000 IN GREAT WORKING ORDER. COSMETICALLY, IT’S PRETTY GOOD, WITH FEW MINOR SCRATCHES. CHECKED OUT AND EVERYTHING SEEMS FINE, BUTTONS, KNOBS, KEYS, DISPLAY, ETC. AND NO ISSUES. THE WOOD PANEL IS HOLDING ON BY ONE SCREW ON ONE SIDE, SO I USED SOME CLEAR TAPE TO HOLD IT IN PLACE. GREAT SOUNDING SYNTH, JUST HAVE NO ROOM.”
“Item is in good working condition, no defects.”