” I bought this very cheap with the intention of attempting to repair it, but don’t have the time or energy to mess with it.

It’s an early model, s/n 0606. The power cord has been cut, and I was told there are botched repairs inside. I have no idea to what extent.

Cosmetically, it’s fairly nice on the outside.” Link

“This Prophet 600 looks amazing for its age. All the knobs function and all LEDs light up in response to the touch pads. I re-loaded the 100 factory preset programs back into it to give it a fresh start and they play,sound and match their descriptions OK. I’ve never had this keyboard worked on and after ten years of home studio use followed by 23 years of storage in my closet here’s what went wrong:

1.) On a few programs, some keys are dead or weak, while in the rest of the programs all the keys sound out as they should. It exhibits this behavior since I pulled it out of storage. I probably should replace the battery but I don’t want to put any work/money into it unless I could verify it would fix the problems.

2.) Tunes itself OK but, it seems like an oscillator gets a little wavy at times. (De-tuning noticed during chords). The oscillators have never been tuned, gets a little better as it warms up

3.) That being said overall this synthesizer sounds great and I believe a little technical service will revive this rare and (truly vintage classic) analog synthesizer. NOTE: While taking photos I noticed it appears to have been factory signed. Pretty faded though” Link

“Hello, I’m selling my gentle used Pro One to make room in my home studio. Serial number is NOT scratched out but faded – reads 3098.

In fantastic working order, no issues to declare. No booklet or manual however the learning curve is minimal (plug & play). Manuals can be found online.” Link

“Up for auction is a sequential circuits prophet T8 polyphonic analog synthesizer keyboard for parts

Pieces that are missing/ not functioning :

5 screws in the back

22 knobs

The original pot on the frequency knob on the Lfo – mod section

The switch on the freq A on the Lfo – mod section doesn’t turn on.

You cannot split the keyboard at the moment


Two keys on the lowest octave are warped and stuck together.

53 out 76 keys work

When you plug in a midi keyboard all the keys work great

What works:

The sequencer

The presets have been currently installed

All the keys work via midi

The after touch

All eight voices are working

all of the knobs and switches work except for the frequency A switch on the Lfo mod

The tuning button works

Modifications/ Repairs

I painted/ stained all the wood on the sides on the front and in the middle of the keyboard.

I replaced the internal battery

I replaced two of the Voice chips

Again is an “as is” auction. The sounds on this keyboard I must say are pretty amazing. But I will say that I will say that it will take at least $1000 to get this keyboard back up to 100%. ” Link

ARP, Axxe @ 18 April 2018, “No Comments”

“Up for sale ARP Axxe 2313 monophonic Synthesizer . Unit was refurbished with a Synth Chaser ARP Axxe Capacitor and IC Kit. Also a brand New ARP Axxe Replacement Slider Kit – 23 pieces full set was installed. Unit was calibrated to ARP service specifications. White noise generator is engaged by pressing noise generator switch. Keybed was cleaned brought back to functioningKeybed has been straightened out ” Link

ARP, Odyssey @ 18 April 2018, “No Comments”

“This auction is for my personal original vintage Arp Odyssey MkIII. It’s been fully serviced with a complete rebuild and restoration of all sliders, switches and the mechanical J-wire keyboard back to “like-new” condition.

There are only two cosmetic issues with it: 1) missing the left side wood panel, and 2) a light scratch along the left front panel above the “portamento” sider. Otherwise it is near mint.

Fully tuned and 100% operational, this is a great unit to add to your collection if you’re looking for the vintage original sound of the Arp Odyssey. ” Link

Jen, SX1000 @ 17 April 2018, “No Comments”

“Vintage JEN SX-1000 Synthetone Analog Synthesizer up for grabs
Nice late 1970’s Italian Synthesizer
In great cosmetic and working condition!” Link

Casio, CZ-1 @ 17 April 2018, “No Comments”

” Original Casio CZ-1 in great condition! Ready to play” Link

Akai, AX-60 @ 17 April 2018, “No Comments”

“This synthesizer is selling “For parts or not working” because it does not work. There is no sound output from any jack when tested with headphones, except for a faint hiss from the headphone jack. Moving the sliders does not change this. It is definitely broken. Consider this item for parts only. View photos for condition. ” Link

“Used, but superb condition for over 30 years old!!!Has travel case and manual. RARE to find in such great condition!” Link

Ensoniq, ESQ-m @ 17 April 2018, “No Comments”

“You are bidding on an Ensoniq ESQm hybrid analog / digital synthesizer. It is the rack-mount version of the well known Ensoniq ESQ-1 keyboard.

If you’re looking at this unit, you probably know it well for it’s unique sound. If not, the ESQm is an 8-voice hybrid analog / digital synthesizers based on the exact same engine as the ESQ-1. It utilizes digital oscillators processed through a subtractive synthesis engine with a pure analog VCF / VCA section built on the coveted CEM 3379. This combination of digital and analog components give it a very unique “hybrid” sound that can range from stark and cold, to warm and ballsy, to experimental and creative, and many variations in between. ” Link

Casio, CZ-1 @ 17 April 2018, “No Comments”

“Vintage Casio CZ-1 Digital Synthesizer. All buttons, slider, display, audio out, modulation and pitch bend wheel are working. No defect whatsoever. The only issue is the 2 missing slider cap of the master volume and master chorus. The unit is in pristine condition as well. there are minor scratches on the keybed. This is rated 110V.” Link

Baldwin @ 17 April 2018, “No Comments”

” You are bidding on the rare and vintage Baldwin Syntha Sound analog synth in great working condition. The spring reverb is nice and warm. Free Shipping! Ships FedEx Ground. ” Link

“Used Oberheim Matrix 6 keyboard with the following included: power cord, foot pedal, manual, sound patches cassette, some midi cables and travel case. The unit will be shipped in the travel case along with all of the mentioned items in the case front pocket.

I tested the unit and all buttons are in working order. All output jacks are working. All keys (black and white) are working. Both shifters are working. Volume control is working. Did not get to test the MIDI jacks.

Due to the age of the keyboard, I must disclose the following items.

•The display is not working properly. I did some research and I believe that a battery may need replacing.

•Minimal body scuffs but there is one dent in the corner top of the keyboard. Does not effect the play of the keyboard.

•And finally, the foot pedal does not work properly. Not sure if it is the pedal or the jack. It may be a setting on the keyboard that controls the foot pedal but with the display not working properly, I could not figure it out. The foot pedal is sold as.”

DMX, Oberheim @ 17 April 2018, “No Comments”

“Regretfully selling my oberheim dmx drum machine, very clean, smoke free studio adult owned. Had this for almost 20 years, comes with manual and power cord. Was in my studio #2 for years and recently just been sitting on a gear shelf after my move. Used to work and play just fine , but when I recently just turned it on the screen is blank. So I have to sell it as a parts only auction. Very clean check the pics. This thing is a legend for a reason !” Link

“Barely used at all. Basically just taken out of original packaging. I am also including 2 extra knobs and a code to download Tonic from the Teenage Engineering website. Im not sure about the specification between analog and digital, but this works as a one stop shop. It’s a midi controller. A stand alone device that has its own built in speakers. You can even record a whole album on the OP-1 and then save it to your computer. It really is a crazy, miraculous, fantastic device. Unfortunately it just isn’t getting the dedication and attention that it deserves so I need to find it a new home. ” Link

K3M, Kawai @ 17 April 2018, “No Comments”

“Included in this auction:

Kawai K3m

Power Cord (attached)

Kawai RC-2 Memory Cartridge

Buy it now bonus items:

6’ monster midi cable.

2 x 6’ Mogami quad TRS to TRS handmade cables with neutrik NP3 ends. (Stereo Pair)

In good condition, fully working, fully tested. I bought this synth 3 years ago. I’ve used it very little. I am selling my gear as I no longer have time to use it. I want the synth to have a nice home where it can make nasty sounds!

The glass covering the display has a light scratch along its length. Can be seen in the 2nd photo. The glass is not cracked. ” Link

“This is a rare Cwejman s1 mk2 semi-modular synthesizer in excellent condition.
Original production run #047.

Fully functioning and calibrated.

This is the mother of the entire Cwejman EuroRack module line; a fully analog beast of a synth capable of an ultra-wide range of classic and modern sounds.

It is a self contained semi-modular synthesizer with midi, midi to cv conversion, extensive patching capabilities,1/4″ unbalanced and balanced XLR outputs, professional switchable internal power supply, and much more…

The instrument comes with rack mounting ears, a/c power cable, original user manual, snazzy original Cwejman patch cables and extra extra-long patch cables for reaching other devices without close racking.” Link

Cheetah, MS6 @ 17 April 2018, “No Comments”

“Up for sale is our excellent Cheetah MS6 analogue synthesiser upgraded with the MAAD 1.3 software.

About this MS6

Overall, the synth is in excellent working condition. The front panel is very clean with only minor blemishes. The top has some minor marking and wear as you would expect, the sides and rear are also clean with only minor marks.” Link

Steiner @ 17 April 2018, “No Comments”

“Gently used never opened or worked on

smoke free stationary life

Mint for its age.

still works with a few scratchy notes at times,will have to be gone through with contact cleaner .

All in all a very rare keyboard which will make the right collector very happy.” Link

Casio, CZ-101 @ 17 April 2018, “No Comments”

“Awesome synthesizer, everything works and sounds great.” Link

Moog, Rogue @ 16 April 2018, “No Comments”

“This Moog Rogue synthesizer has recently been serviced. In great condition. Service ticket is included in the photos.
Everything is in working condition.
The power connector is original and works, I noticed it’s fairly touchy though- not a very tight fit. Seems like it would be easy to wire a new power cord if it ever became a problem.
It’s clean looking as well! ” Link

Moog, Prodigy @ 16 April 2018, “No Comments”

“If you are like me, when you are buying a high-end instrument on eBay, you want a greater assurance than “It looks great to me, but I’m no expert, and no returns!” That’s why I put nearly $200 into having this Moog Prodigy 336A Synthesizer professionally inspected and serviced before listing on eBay. It is ready to gig! I took it to Music Technolgy in Springfield, Virginia, the premier Washington, DC, experts in vintage music electronics. (Check them out on Yelp, these guys know what they are doing.)

Besides an overall test and cleaning, Music Technology:

Resoldered the fatigued connection points for the keyboard and output
Deoxed all pots and switches
And removed 35 years of debris from the inside” Link

Moog, Rogue @ 16 April 2018, “No Comments”


Moog, Prodigy @ 16 April 2018, “No Comments”

“This Prodigy is in great shape. I know, since I repaired it. The case is original and un-restored. The keyboard is perfect. It has all of the knobs, switch covers, and case feet. I did change the LED from Red to Green and added golden screws to make it look sharp. I am selling because I have a couple of other similar synths and this one is just not played enough. So love it well.

You can see a demo of this exact synth here, with me playing it: https://youtu.be/aL6hAgW-S4E

All it needs to be kept in good shape is tuning. It has ports on the back for that.

This is the pre-CV model, but if you know what you are doing, you can add CV to it.” Link

Moog, Source @ 16 April 2018, “No Comments”


In Top Zustand – Nichtraucher – Nur Studio

Frisch geserviced (Januar 2018) – per Rechnung belegbar !” Link

Moog, Rogue @ 16 April 2018, “No Comments”

“Great little original Moog synth used for bass wap wap!
Includes power supply & pdf of Moog Rogue Technical Service Info Manual.” Link

Moog, Sonic Six @ 16 April 2018, “No Comments”

“This Sonic 6 is in exceptionally good cosmetic condition and 100% FULL working order.

All switches, knobs, LED’s are in full working order.”

D-50, Roland @ 15 April 2018, “No Comments”

“Roland D-50 Linear Synthesizer in VG – Excellent condition. Made in Japan.

Nice fully intact unit, all keys and features work properly. Roland classic synth – fully functional with amazing tones. Very clean.

Comes with non-original power cord. Will ship internationally.” Link

Roland @ 15 April 2018, “No Comments”

“You are bidding on Roland D-20 Linear Synthesizer Keyboard Multi track Workstation. The synth is in excellent cosmetic shape, it has been completely serviced, cleaned, new battery, tested and absolutely everything works great.Good sound collection, display is still very bright, see pictures” Link

Juno 6, Roland @ 15 April 2018, “No Comments”

“Good working condition. Cosmetically is also in good shape. Has stand and headset.” Link

Roland, SH-101 @ 15 April 2018, “No Comments”

“Roland SH-101 in excellent cosmetic condition and perfect working order.

Serviced last month by Redshift Digital Audio including complete testing and calibration, tuning.”

Roland, TR-707 @ 15 April 2018, “No Comments”

“Up for auction is a vintage Roland TR-707 in excellent shape. There are light scuffs on the front panel and scratches on the bottom panel. The front panel was recently cleaned of dirt and grime. Faders and tempo potentiometer were recently cleaned as well and work great. The battery cover on the back is missing, but there is no corrosion on the leads from busted batteries.

The TR-707 comes with an aftermarket power adapter. There is an issue where if the adapter plug is not in the right orientation then the unit will power off. It could be an easy fix, but I haven’t tried as it hasn’t been an issue when using it.” Link

Roland, SH-101 @ 15 April 2018, “No Comments”

It is a special coloring model of Roland SH-101 born by collaboration of Japanese music instrument professional shop and GHOST IN MPC.
This special color of fluorescent green definitely fascinates users. Although it is a second-hand repaint model, the inside is also thoroughly maintained.
It is only one custom model in the world!”

” Synth has sticker on the back that says it was serviced in 1998 by Roland service. I’ve had it since ~2012. I purchased from someone on craigslist locally. The guy kept it covered with the black cover seen in the photos. I’ve kept great care of it ever since as I do with all my equipment. All voices work fine and controls work great.

**The only issue it has is the LFO delay slider goes from a little to a bit more towards the low end of the slider span. ie it jumps in value a bit.

This was much more noticeable when the slider was on the cuttoff frequency. I switched the two sliders because I didn’t care that the LFO delay had this sudden jump as It did on the cutoff. Honestly you probably wont even notice as it doesn’t jump that much. Maybe a value of 20 in terms of standard 1-127 in midi cc values.” Link