“ALL of the oscillator chips were replaced (including the LFO) with NOS CEM chips.
Also the power supply was checked out, tuning calibrated and I have replaced ALL of the keyboard’s rubber bushings.
This Pro-One has the more desirable “J-Key” type keyboard which is considered much more reliable.
Once I replaced the bushings the keyboard was a LOT quieter and had a much better feel to it.
Repair work was professionally done by DFX in Salt Lake City (they make great boutique pedals too!).
Cosmetically a 9+ out of 10 it is a beautiful thing to behold! There is one scratch on the back, and normal wear and tear marks on the wood sides (which can easily be sanded out).
Awesome powerful sound, very ballsy and aggressive with its famous modulation capabilities,sequencer and arpeggiator.
Note: There is one knob currently missing (the volume knob) but I will purchase a replacement for the winning bidder and have it sent directly to you.
This is a great example of 1982 synth technology, VERY RARE and COLLECTIBLE, ESPECIALLY SINCE I HAVE THE ORIGINAL BOX it came in and the ORIGINAL MANUAL as well.” Click here to search for synths on eBay
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“This 1984 SCI Sixtrak Fully Analog Synthesizer is in amazing condition! *NEW BATTERY/COMPLETELY CLEANED & SERVICED BY A PROFESSIONAL TECHNICIAN* Every key, button & knob work as intended. all 99 presets have been restored. Comes with custom transparent panels & I’m also throwing in original wood panels! *Please Note; one minor issue the pitch wheel is slightly sticky when bending down & there’s a few surface scratches* thanks for looking!” 
“This is a beautiful early 70’s Tonus branded ARP Odyssey Mark 1, the most desirable of the Odysseys! It is in excellent, Mint minus shape for its age- you won’t find a nicer example of these fantastic analog synths. It has been used lightly in a smoke-free private recording studio. There are very minor signs of use, to be expected from its age. All functions work fine. Occasionally I noticed a little noise when moving the sliders. A tech advised me that this was a simple fix of spraying the sliders internally but I decided not to do it as it wasn’t a problem for me. Two of the colored slider covers are cracked. These little plastic covers can be found on Ebay and in no way affect the functions of the sliders.These Odysseys are fantastic sounding synths- huge, warm, analog sound and it’s no wonder they were embraced by many rock artists like Joe Walsh, ELO, Steve Miller, etc. as well as Jazz artists like Chick Corea and Herbie Hancock. This synth is in fine working condition and in beautiful looking shape. Because of its vintage, I am selling this “As Is”. Item will be packed carefully and double boxed. Also included: Copy of the Service Manual for the Odyssey. Thank you” 
“This is in great working condition.
“This Blofeld Keyboard is in excellent condition and working perfectly. All controls have great feel and respond accurately. All keys are straight and play nicely. All lights fully functional, screen in perfect condition. All ports and jacks are in great shape and connect without issue. Sound is strong and clear. Some light signs of use, but free of any scratches or dings, in excellent physical condition. ” 
“One of the best sounding oscillators in the format. ” 
“Excellent condition, professionally restored by Tone Tweekers. Includes hard Anvil road case”
“Vintage Kawai K3 Analog / Digital Hybrid Synthesizer.Very light use in a non-smoking, clean (yes clean) home studio Great condition , cool synth with a vary unique sound. ”
“Near mint condition. I cant find a scratch or fault anywhere on this Xpander. Looks brand new without a flaw. Functionally, works flawless. All encoders work properly with no skipping or errors. The LED screen works perfect without any burned out lights or faint lit lights. All 6 voices tune properly. Wooden side panels look new-screws look new, etc, etc. Maybe the underside of the Xpander is scratched….I haven’t looked at the bottom. Roadcase is in very good condition-interior foam is in excellent condition. Original manual is in fair condition. ”
“FOR SALE: Casio CZ-1000 Vintage Keyboard w/ Hardshell Gator case.
“Posting it for parts only cause I have no way to test it. It powers up but I don’t get any action on the display when I hit the buttons. Not sure if it needs to be reset.”
” For sale a Casio Vintage Synthesizer CZ-101 + Owners manual made in Japan
“Alesis A6 Andromeda Keyboard Synthesizer FREE SHIPPING. The keyboard is in used condition with some cosmetic blemishes on it (see photos.). One of the panels on the side of the unit has come off and the mounting brackets cracked but its only cosmetic. I took 2 photos one assembled and the other of the extent of the blemish(see photos.). There are a few knobs that are missing but the knob input still works it is only the top knob cover that is missing. It is also missing one of the bottom “feet” bottoms (see photos.). I have opened the inside and took a few photos so you can see there is no damage internally to the mother board or any of the circuitry. I have tested all the keys and they work perfect. There are also a few scratches on the top of the unit but again are strictly cosmetic. The LCD is nice and bright. The knobs are all in good shape and work perfect. The two wheels are in great shape as well with great resistance so they haven’t been used too much.”
” Very rare PAiA Stringz N Thingz synthesizer. Decent cosmetic condition considering its age. Comes in its own case.
“Up for buy it now is a gently used Alesis Andromeda A6 Vintage Analog Synthesizer. I am the second owner of this amazing synthesizer. It has been well cared for & stored in my smoke free studio since original purchase many years back. It has been covered when not in use. It has seen very little use by me (less than 3 hours) as I frankly don’t have the time for tinkering with sound design these days. The synth shows signs of use (marks, scratches to the outer shell and is not mint perfect). All knobs and buttons are functional, but feel a bit loose, with some buttons tougher to press then others, all of this is due to the synths age and should be noted. ”
“Unit looks to be in great condition, powers up and shows a clear display, unit was opened up to visually inspect and looks just as good inside also!
“KAWAI R-100 DIGITAL DRUM MACHINE with ROM EXPANDER MOD x 4 eproms and a new battery.
” Low reserve. Up for auction a Symbolic Sound Corporation Capybara 320 Sound Computation Engine with Kyma Firewire in excellent condition. Very rare!”
“Gently used never opened or worked on
“front perfect,works perfect, top has tape on it you can remove it but when racked you won’t see it,comes with manual,power cord,and 2 pre set sound cassettes,well cared for, hardly used.”
“This Moog is not in working condition. All parts are included except for 2 missing nobs. The keyboard has a broken key. Circuit description and schematic drawing included.”
“Moog Prodigy 336A Synthesizer Keyboard/Professionally Inspected & Serviced!
“This Multimoog is in good condition, there are signs of wear throughout the body and some small cosmetic damage but nothing too serious.”
“I am the original owner of this mini moog -purchased it in 1979 at Sam Ash LI
” The Bender wheel tip broke off, still fully operation see image close up
“Backup instrument. Mint new condition, only tested.”
“All buttons, knobs, and sliders work. No issues with LCD screen. Comes with a power adapter not pictured. Was stored inside a climate-controlled, smoke-free home. It was only used a couple times for a music project.”
“Fully restored Roland Juno 106 Analog Synthesizer working perfectly. Includes Juno 106 synth, US power cable and 1 extra 80017a voice chip.
“synthesizer works fine.
“This listing is for a like-new Roland MC-202 analog synthesizer/sequencer. It is in fantastic, fully-functional shape with only two marks on the bottom of the synth. The 202 has not been modded or altered in any way and has seemingly rarely ever been used. The 202 is very similar to the Roland SH-101, though the 202 sports a much more advanced sequencer. Even the box is in good shape. A proper 9V power supply will be included with the synth. Good luck and happy bidding!”
“If you’re looking at this, then you know what it is. I recently bought this from a real ‘synth guy,’ who went over it and serviced it… made it good for years to come. He replaced the battery, re-capped it, and cleaned it up. If you’ve been looking for a great Promars in very good-excellent condition, then this is the one… Also probably the only one available online that ships from inside the United States. It is in 100% perfect 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.”