“Up for sale is a fully serviced and 100% functional Korg Poly 61 vintage synthesizer. The original NiCad battery has been removed and replaced with a much more reliable lithium type.
This synth suffered extremely little damage from the original battery and as such is a very good choice for someone looking to grab a Poly-61.
The Poly-61 is a really great sounding machine, very similar in style to a Polysix but with 2 oscillators per voice! It also has the same arpeggiator (~with clock trigger input~) and voice assign section as a Polysix (~chord memory~).” Click here to search for synths on eBay
“Here is a very rare and massive sounding FM beast of a synth.. The classic and legendary DX5. Essentially a DX1 minus the weighted keybed and top panel LEDs.
“VINTAGE YAMAHA FM SOUND GENERATOR MIDI SOUND MODULE
“1u 8 Voice Multi-Timbral 4 operator FM synth with 2 outputs for stereo or 2 separate combinations of the 8 voices. 128 preset sounds, 32 user or use a patch librarian and have as many as your hard drive can hold. MIDI delay and reverb effects. Micro-tuning, detuning, splits, and layers. I’ll include an EPROM with last firmware revision (1.6). Lots of editors and controllers available for these now. ” 
” You are bidding on a fully working Yamaha CS01-ii analog mono-synthesizer. The unit is in great condition, with only a few scratches on the bottom. I took the unit apart and inspected it and cleaned it where I could. All of the knobs and faders have been tested for proper operation. All of the keys work and I cleaned in the contacts on all of them. The unit works with both 6AA batteries or when plugged in (12V power supply IS included!). The circuitry looks to be in great shape (see pics).
“Yamaha CS-50 – 4 Voice Analog Polyphonic Synthesizer Keyboard — In great condition! 100% functional! Looks good!
“USED.TESTED GOOD .SHOW SOME SIGNS OF USAGES.GOOD CONDITION.CHECK ALL THE PHOTOS”
“Six-Trak Synthesizer – Everything works and is in Very Good Condition. Midi settings all set to factory settings using the midi ports. This synth has been well taken care of and all knobs and pads feel like they have experienced low use. The wood side panels are in great shape and the keys are clean. The Inside shows no sign of repairs or abuse. Clean inside and out. Please see the photos. “
“This unit is in almost new condition and works flawlessly. This is a great and rare find. Comes with original manual and full original library of samples on 3 1/2″ Floppy and replacement Floppy Drive.” 
“Sequential Circuits Pro One Analog Monophonic Synthesizer Fatar Keybed Turbo CPU MIDI
“In very good condition, works perfect, has the firmware chip with version 2.15 direct from Bob Grieb.” 
“The classic mid ’80s mini-synth. It’s over 30 years old, and it’s working very well! Good condition. Some minor scuffs and scratches. Headphone jack amplifier circuit has a small amount of background noise (exactly like my other CZ-101), but not bad.” 
“This unit is in very good used working condition with no signs of wear or defect.” 
“This is a great condition Micro-Q, and a particularly rare color and encoder. Power supply has a weird adapter on it the original owner used, and it worked just fine for me. Everything functions, all encoders work and the synth sounds fantastic. I have too many wavetable synths!” 
“This is one of the craziest, most awesome pieces of gear I’ve ever owned, but unfortunately need the funds for another crazy awesome piece of gear.
“STS/Oakland era custom panel with extremely useful oscillator sync mod on both PCO’s. The sync is much stronger than stock, making it very easy to lock in harmonic or subharmonic relationships, basically anything musically useful. This is an absolute requirement for live patching.
“You are bidding on a Breakaway Vocalizer 1000. It includes mic, power supply, and a cartridge. It all works great. Shipping within the USA only. NO returns.” 
“About operation check
“100% Fully Functional.
“Pre-SRM model, super clean, works and sounds great. Much richer tone than either of the later SRM models. Comparable to Mk. II Arp Odyssey (2810) except many more routing and sound shaping options. One of the most versatile monosynths ever made, a superb solo/lead instrument, an insane FX machine, an absolute joy to play.
“Excellent cosmetic condition. Unit 100% functional.Small ding in left of rear panel. One red LED is out (Coarse).”
“Rare Octave The Cat analog synthesizer, their answer to the ARP Odyssey.
“Works great, no issues, aside from a little bit of rack rash. Comes with the power cable and 4 screws.” 
“I bought this new in 1974. Serial # 6204. Electronics are in excellent condition. Recently serviced and calibrated. New key bushings. Sounds great and plays well. Lots of scratches on the wood case. Flight case included and will ship that way for max protection. ” 
“This item is used and in good condition. This item was tested and is in good working condition”
“A VERY RARE FIND!
“Very clean, but only makes his, no other sound. Probably an easy fix for someone who knows how.”
“Up for sale here is a fully-serviced Roland SVC-350 Classic Analog Vocoder Rack in great condition! Unit comes complete with manual copy and built-in power cord. Arguably the most recognizable vocoder used in music history….. a favorite among electro, freestyle, boogie, new age, film composers, breakbeat, industrial, and hip hop artists alike!
“For sale is a fully functional Roland Juno-60, just serviced. It had a few issues which have all been fixed (a few faulty components replaced and traces repaired with jumpers). As well, the PSU has been recapped and the synth has had a full 8-hour burn in. Cosmetically, it looks pretty good with a few minor scuffs on the sides and some dents on the top that you’d expect from a vintage synth that has been played. That being said, the back bottom of the top panel has seen some action and is slightly bent/warped, which does not affect playability of course. It is also missing one of the hinges that connects the panel to the board underneath. Other than those items described, this synth is fully functional and is fun to play. Since it is a vintage instrument, however, it is being sold as is.”
“Roland Juno 106 Vintage Programmable Synthesizer for Parts or Repair
“Used roland digital sampler comes with 10 MB flash disk sold as is tested and works comes with 6 AA batteries
“This is the real deal. A vintage Juno 106 synth. Heard on countless pop recordings in the last decade as pop producers dove into the thick 80’s synths. All the knobs and sliders are there and all work. The Voice chip 6 needs servicing. It works sometimes then decides not to work other times. Ive seen repair services go for $150 on here. The other note is the very highest key is cracked. Ive included a youtube link to show that everything works as I have described it. I just pulled it from my closet for the first tie in awhile. It seems as if all my presets were deleted. Not sure if thats an internal battery issue or what.”
“Great condition.all works”
“Roland Juno 106 polyphonic analogue MIDI synthesizer.
“Pretty good condition. One white key isn’t responding perfectly- it works fine but misses occasionally. Probably dust. No sticky keys.”