Marion Systems MSR-2

“That’s a video of the Marion ProSynth that I found on YouTube. The ProSynth is the non-expandable single voice board version of the MSR-2. It sounds about the same but the MSR-2 has some more options, such as filter inputs.

Comes with a printed manual, but the manual can also be found online.” Click here to search for synths on eBay

Oberheim Matrix 1000

“For auction:

Oberheim Matrix-1000 sound module.

This is a hybrid subtractive-synthesis synthesizer: the oscillators are digital, the filter, amplifier, LFOs and envelopes are analog.

It is running firmware 1.11, you can update it to 1.16 (a third-party has developed it) by purchasing it online, a quick Google search will take you to the vendor.


Oberheim Matrix-1000
Power cable
original manual
original packing
original box

Cosmetically the synth is 9/10. No scratches or dropouts on the audio output. ” Click here to search for synths on eBay

Grendel Drone Commander

“Bought this awesome and unique synth for a recording project, but now I need to part with a few incredible pieces I can’t afford to keep.

The sound this puts out is dreamy and heavy. The filter is a beast.

These are getting to be VERY rare and hard to find. It’s the only one on eBay and it’s been a while since I’ve seen another listed. Buy it now!

What you see is what you get, and since I’m not an expert on this thing it’s being sold as-is, but it definitely sounds fantastic on the album we just made.” Click here to search for synths on eBay

Grp Synthesizer A4

“Italian made GRP A-4 Analog Synthesizer.
3 full-feature oscillators, plus 2 discrete LFO’s. S&H, Noise, Mixers, 2 ADSR, 16-Step sequencer, A-440 generator. 12dB State variable filter and 24dB Low pass filters, Glide, Auto-pan, accepts external signals, Stereo Headphone TRS jack. CV/gates in and out. MIDI and USB in rear. Complex routing features: provides virtually the same flexibility of a modular without the need for patching. The A-4 is single-voice, and does not store patches.
Audiophile timbral quality. Truly holds its own with ANY other synth. One of the most beautiful synths ever made.
I had a Voyager XL, and for similarly priced units, the A-4 blew it away, so I sold my Moog. The GRP has much more power and flexibility and the fidelity is superior to the Voyager, IMO. If you are looking for a Model-D sound, then buy a Model D, cause even Moog’s re-issue doesn’t sound like a D to me. The GRP is not a Moog clone.

This is one HELL-of-a synthesizer, semi-rare. Will retain its value; so buy it, use it, then sell it for what you paid for it.

You will notice one small blemish in the last photo. This is NOT a scratch, merely a narrow SMUDGE (about 1/2 inch) that can easily be covered with the matching stain from a Minwax Wood Finish Stain marker pen. The cabinet appears to be a walnut veneer. Other than that, the unit looks brand-new. I am second owner, neither of us were smokers, home studio only, never live gigged, super low hours, only we touched it.” Click here to search for synths on eBay

Categories GRP

Akai VX90

“For your consideration I have a ultra rare AKAI VX-90 rack. It sounds amazing and is 100% functional. It comes from a clean smoke free home. It comes with the original rack ears and hardware. This is a VCO synth with a lot of cool features. All of the waves have pulse width. You can stack half or all of the voices in unison and then detune them for a super fat sound. Its really easy to edit from the front panel. It also has an input to process external audio form AKAI samplers. The only thing worth mentioning it that the power cord has been shortened to fit in a rack, it does not affect the synth whatsoever.” Click here to search for synths on eBay 

Octave Cat SRM II

“This one is brand new in the original box with the manual + brochures. It is working 100%! Prior to the listing, it had been calibrated as it’s been sitting wrapped in it’s box for over 37 years. I have several available! This model is last of the series, the SRM-II. It uses CEM 3340 (oscillators) and a SSM 2044 (filter). ” Click here to search for synths on eBay 

Oberheim Xpander

“Hey there friends! This Oberheim Xpander Analog Synthesizer is in excellent condition, (except for a small scuff on the front left), as you can see from the pics! All functions are perfect! Has the most amazing sounds and comes with some extra bonus midi cables that allow you to download a whole bunch more amazing patches online! The sweetest synth that some believe could be the best one ever made! Used on a few tracks in DJ Q-bert’s Thud Rumble studio! I’m also including a BONUS Anvil Case to keep the Synth safe!” Click here to search for synths on eBay 

Moog Prodigy

“I just noticed that I didn’t put all the white switches back on after cleaning them. They WILL be included with the synth!

There is the Moog Prodigy and then there is THE Moog Prodigy with External Controls. This is the more desirable one that has:

– S-Trig In/Out
– Kybd In/Out
– OSC In
– VCF In
– Sync In

These controls allow you to achieve deep bass notes as well as being able to connect the synth to a sequencer.

I am not the original owner. I purchased this synth for a studio project where we needed those nice thick, dimensional analog tones that cannot be achieved through soft-synths or from the newer digital synths. If you want the real deal, here it is!

Cosmetically I would say it is in good condition for a ~30 year old vintage synth. It is definitely aged, but that is part of the beauty of a vintage analogue synth. If you want mint, this isn’t your synth.

Please Note:
As mentioned, I am not the original owner and so I do not know much about the history of this particular unit (where its been, maintenance, etc.), but what I can tell you is that it works as designed. Every key, every pot, every switch works. It plays in tune. During the recording process we had it connected to an Analogue Solutions Oberkorn3 analogue sequencer, and the Prodigy worked perfectly.” Click here to search for synths on eBay

Moog Prodigy Xpander Prototype

“This is one of the rarest Moog synthesizers ever produced!

This is the prototype of the Moog Prodigy, called the Moog Prodigy Xpander. This is the ONLY one I’ve ever seen, and I visited the Moog factory so many times, that when the employees saw me performing with my band, they assumed I was an employee too!

This tabletop module was going to compete with the Oberheim SEM, but Moog Music in the late 70’s decided to go with the keyboard version of the Prodigy, and many of them are still in service today.
It works perfectly, sounds incredibly fat, and it’s oscillator sync sounds so much better than other analog synths.

I was a rep/dealer/consultant in the 70’s and 80’s to many golden age synth companies including Moog Music, (Williamvsille, and Buffalo factories,) Polyfusion, Sequential Circuits, Oberheim, Pearce Amps, and was a consultant to Les Paul.

Owning this for synthesists, is analogous to being a guitarist and owning Fender Stratocaster 001.

Most Moog experts weren’t aware of this prototype, but being a rep, and living just 10 miles from the Moog factory, gave me an advantage to obtain rare pieces like this. Tony Marchese was the head engineer on this rare piece.

I met Bob Moog at the age of 19 in 1973, and he became my mentor, helping me in those early days to learn all I could about electronic music.
You’ll need a MIDI to CV convertor to use this.

Obviously, this is for true Moog fans, and collectors.
There are no refunds or returns for this item, so please be aware of exactly what you’re buying” Click here to search for synths on eBay

Roland TB-303

“Roland TB 303 in great shape for age.
Clean, fully refurbished – new capacitors, tasters
Installed Quicksilver CPU (original CPU comes with unit in a separate box)

rare chance to get one in this condition since most of TB303 units are over used and don’t look good.” Click here to search for synths on eBay 

Roland Alpha Juno 1

” Vintage Roland JUNO 1 Keyboard, Synthesizer in Original Box, Vintage Roland JUNO 1 Keyboard, Synthesizer in Original Box. Unit is in very nice clean condition. Looks like it was used very little. Unit has been tested & works great. Comes with power cord, manual, music stand only. NO pedal is included. Case has 2 minor cracks at the end screws as pictured. ” Click here to search for synths on eBay 

Roland Juno 6

“Up for sale is my Roland Juno 6 Polyphonic Synthesizer. I bought this last year thinking I was going to use it but it only used it three or four times. It sounds amazing and being from the 1980s, is in excellent condition as you can see from the photos. The previous owner kept this in the closet for decades. Everything works flawlessly. There is no lag on any of the keys. This is the same synthesizer used for the soundtrack of Stranger Things. It also comes with the original sustain pedal and a few other cables.” Click here to search for synths on eBay 

Roland CR-78 with Future Retro Swynx

“Recently serviced with a new old stock faceplate installed, cleaned and new battery lithium installed for saving tracks on the programmer.

This auction also includes the awesome Future Retro SWYNX box that also you to swing the preset loops and also acts as a pattern programmer.

Last but not least this CR-78 has been modded with a knob on the back to adjust the bass drum decay, giving you a variable sound from a stubby kick shorter than the regular cr-78 bass drum all the way to a booming 808 like kick.

The wooden box itself has some dings and corner wear which is to be expected of a 40 year old machine. This could easily be replaced with any wood of your choosing in the future.” Click here to search for synths on eBay 

Roland CR-5000

“This drum machine was working fine last year when we used it exclusively for click track in our Studio.

Unfortunately, after testing it we noticed that 4 or 5 of the buttons don’t work- It seems like that contact conductive pads (under the buttons) are dirty and in need of a good cleaning and/or minor modification.
So the unit is sold AS IS” Click here to search for synths on eBay 

Roland JP-8000

“There are certain patches that don’t seem to be working correctly but overall works good. Possible fix (from what I have read online) is a new capacitor. I am offering this at a discounted price and buyer will need to accept this as is. The unit needs to warm up otherwise you may hear some distortion when the volume is too loud, however once warmed up that goes away. ” Click here to search for synths on eBay 

Korg Poly 800

“The synth is in good condition and in working order.
The synth powers up and make sounds.
I can’ t test all functions because i am guitarist but i thing that everything is ok.
Whatever i selling it like not working.
About external condition please see the pictures.
There are some scratches but it’s normal for synth on this age.
The volume knob is not original.” Click here to search for synths on eBay

Korg Poly 800

“Battery compartment door is missing. It powers up intermittently and display shows “Load” when it powers up.
Cant seem to get a data dump of the factory sounds to load maybe it needs a new power adapter.
It has the Moog Slayer mod done with a 1/8” jack for cv control over the frequency knob, great for external control.
It has had the battery back up mod done so no need for the 6 c cell batteries. ” Click here to search for synths on eBay

Korg VCF Synth Pedal with Foot Controller

“Up for sale is a (1) vintage Korg VCF FK-1 Synthe Pedal filterbox with the expression pedal, cable to connect them with each other, owner’s manual and original box. The most complete package you can get. It’s in good working condition and sounds superb! Cosmetically the FK-1 and pedal are in near mint condition with only some minor scratches on the front panel of the filterbox and little wear and tear (see photo’s). The original box is very damaged and the manual is in used condition. The filterbox is an original 220v version with European plug installed and the serial number is: 770172.” Click here to search for synths on eBay

Korg MS2000

“Excited to offer this great deal on a KORG MS 2000A real beauty with a couple of scars but, that makes her cooler. In good working order just has one broken key which I can have repaired by the top gear tech repair guy in Chicago for $50.00 . The mic /. line switch is stuck on mic great news for the vocoder! Also one input has been repaired and is now sturdier than the original design. A great Synth for Bass tones and sound manipulation / modulation. Plug it in a you are good to go A power supply can be purchased for less than 10 bucks!” Click here to search for synths on eBay