PAiA 4700 Modular Synthesier

“I’ve been carrying this thing around for YEARS. I keep telling myself I’m going to restore it… I’ve finally given in and am hoping someone will make it go again.

It doesn’t really work, certainly not like it should. It makes sounds but… not really? It also has had some mods done to a few of the modules which you can see in the photos.

It is in a home made plywood case which even still has some measurements written in pencil on the side. I call it The Folk Synth since it has an early American folk art vibe.

The pots date it to 1974, which would make it quite an early Paia. From a little digging there are several places online to find schematics and build docs.

This is definitely a project so expect a fair amount of parts replacement and rewiring. Assume it’s 46 years old and has never been serviced.

Due to age, lack of functionality, and unknowns this is definitely sold as-is and with no reserve. However, I do hope that someone will make this the coolest old time folk art modular ever!

It contains these modules:

2720-2A VCO

2720-5 control oscillator

2720-14 sine/PWM

2720-3L low pass filter

2720-3B band pass filter

2720-12 inverter/buffer

2720-11 envelope follower

2720-4 function generator

4710 function generator

4740 envelope generator

4711 four channel mixer

2720-7 power supply” Click here to visit listing on eBay

Korg SQD-8

” Korg SQD-8 Vintage MIDI Sequencer / 1Quick Discs , Not powering up therefore sold as spares/not working ,For detailed cosmetic condition please examine photos as they are part of description. Auction for unit and 1Quick Discs ONLY” Click here to visit listing on eBay

Studio Electronics Omega 8

“10/27/20. Just serviced by Greg at Studio Electronics. Check functions, tune, and calibrate. Latest OS

Studio Electronics Omega 8 Silver with 6-voice Cards. This unit have the oberheim and Moog filters. Can be expanded with the Arp, Roland, Cs80 cards.

Tested and works great. Minor marks/scratches. Rack rash mostly on top and bottom. Front panel looks great. Small scratch/dent on one of the bottom of the rack ear. Includes power cord and manual only. Check photos as it also described physical condition. ” Click here to visit listing on eBay

Casio CZ-101

“Relatively clean but with some scuffs. Missing the screws that hold the body together other than the two that go in through the battery compartment. Has all of the buttons knobs wheels and inputs/switches that I can tell. Inside all of the boards are very clean. Not sure why it doesn’t power on. I actually haven’t tried with batteries and I don’t have the power supply. For all I know it works. I just grabbed an old 9 V adapter that might not of been accurate and it did not power on with it.” Click here to visit listing on eBay

Yamaha TX7

“This Sound module is in good cosmetic condition and works perfectly. I used this module in my MIDI rack for years back in the day, but have not gigged with it with any consistency in a long time.

It has always been racked and so has some rack rash, but the face is very nice, and the display is perfect. All buttons and switches work perfectly. It has always been used in a smoke free environment.

It comes with great Hammond full draw, Rhodes, Wurlitzer, Pluck Guitar, Strings, Trumpet, vibes, accordion,Pipe Organ, Harmonica, etc FM sounds. These are not all just the factory TX-7 patches but ones that I purchased and used in my DX-7. You won’t be disappointed.” Click here to visit listing on eBay

Yamaha TX802 Project Machine

“Yamaha TX802 TX-802 Synthesizer & Digitech Studio Quad – For Repair

I have absolutely no idea what is wrong with these units. They were given to me by an older musician. As you can see in the pics, they both light up.

Sold completely as is, for parts or repair. Absolutely no returns or refunds.” Click here to visit listing on eBay

Casio CZ-101

“This auction is for:

– Casio CZ-101 Synthesizer
– Power Supply
– 3 Casio Ram Cartridges
– 1 EZ-CZ Cartridge which is the equivalent to 4 Cartridges in 1. All and all there are the equivalent to 7 Cartridges in all for loading and saving patches and accessing them easily.” Click here to visit listing on eBay

Moog Rogue

“Moog Rogue Synthesiser.
I’ve had this synth since the mid eighties and it’s never been gigged, home use only.
Perfect for soaring lead sounds or for thumping bases and is quick and easy to set up.
Still in really good condition for its age.
Fired this up today and the sound is stable. The only small issue is a little bit of fader noise on the AMT, OSC1 and OSC2 but this is only when sliders are moved and I’m sure this will be easy to rectify.
It still has original MOOG power supply and the original packaging although this is beginning to show it’s age now. Also included is an owner’s manual which is in good condition which I received from Moog back in the eighties. ”

Click here to visit listing on eBay

Yamaha DX7 IID

“Yamaha DX7 II-D Synthesizer Very Good condition – Local Pickup Only in New York. Condition is Used.

I’ve had this synth since the 1980s, bought it when it first came out. All data entry sliders, wheels and buttons work. Very clean. With MIDI, this makes a great, reasonably priced VINTAGE controller and main synth for your rig.

No Yamaha stock sounds included.” Click here to visit listing on eBay

ARP Axxe

“Rare opportunity to purchase a lovely, UK located, fully functioning vintage Arp Axxe analogue synthesizer. The unit has recently been cleaned and serviced by EMI Repair, Surrey and sounds great.

Unit is in super condition for its age, with only minor surface blemishing. Unfortunately, all the original slider caps are missing, as if so often the case.

Happy to send more photos if required. ” Click here to visit listing on eBay

Korg Poly 61 Project Machine

“Korg Poly61
Not working
Battery leak problem
This synt worked fine until it stop year ago,now I wanted to change the battery but it seems battery leak and some electronic parts around it are damaged,I read about it on internet it is a common issue for Poly61,I will not touch it,I will leave it to proffesional

Works on 220 Volts
Nice SSM chips inside the mashine
Screws on the front and bellow are missing” Click here to visit listing on eBay

JHS SD-1 Pro-Rhythm Drum Synth

“Up for sale is a rare JHS SD-1 Pro-Rhythm Analogue Drum Synthesizer from the late 70’s from John Hornby Skewes (JHS).

The item has just had a fully service so works perfectly and was from my collection which I am in the process of selling.

The SD-1 is a battery powered drum synth with sound shaping controls and a rubber pad which, when hit, triggers the analogue circuitry for an infinite variety of possible sounds from deep bass to high pitches to sweeping disco tones.” Click here to visit listing on eBay

Roland D-50 Project Machine


You are viewing a Roland D-50 being sold AS-IS or for PARTS.

Here is what I know: I purchased unit on eBay two years ago, wanting a vintage D-50. The unit worked perfectly on arrival and for about six months afterward. Then the unit would only play sounds on key release. This problem is known and usually is indicative of a bad keyscan board or connection to it. If you are handy with electronics, it may be an easy fix if you can track down the parts. I have searched for months here looking for a complete keyscan board to no avail.

The unit was cleaned (previous owner had two-sided foam tape and stickers all over unit) and was working perfectly. Keyboard itself feels Roland-luxurious as original. No dents/dings in the chassis, however there are missing screws on the bottom panel (indicating it was serviced before) and the rubber feet/screws are missing.

The unit DOES play perfectly via MIDI, is capable of sending/receiving sysex, all buttons are functioning as well as MIDI in/out/thru. All audio/phone outputs working. Display is about 70% brightness from new, no bad elements on LCD. Joystick functions perfectly. Sound (via MIDI) is original quality.

Will ship packed in gig bag (no charge, just for protection) and carefully wrapped. I have three road cases, if you want one, just contact me after the auction and pay the extra shipping. Unit is heavy, hence the shipping charge. ” Click here to visit listing on eBay

Roland MKS-80 with Roland MPG-80 Programmer

” You are looking at a Roland MKS80 Super Jupiter and the MPG80 programmer. I purchased this synth in 1987 and have owned it ever since.
At that time I had finished a touring music career and was beginning a career in film scoring and theater sound design. This synth has never been gigged live. It has been used in a number of my small home studios over the years only. I used the synth for my work for about nine years until about 1996 when I completely stopped making music and started a small business. The synth sat unused in a box until about 2012 when I began to dabble in music again. It basically sat unused for 16 years.
I have just replaced the dust protectors for all of the sliders in the MPG-80 and completely cleaned the sliders internally as well as the PC board. It is like new at this point. The new dust protectors are a bit stiff and will eventually wear in. You can feel the fibers of the material rubbing against the slider shafts, but the actual sliders are extremely smooth and function like new. They were completely tested before replacing the dust protectors. The manufacturer of the dust protectors assured me that the material will wear in with some use. It’s rare to find an MKS80 and MPG-80 combination with this kind of low mileage on it.
The current pandemic situation has left me no choice but to sell some of my equipment in order to pay the bills.
I will include all of the factory racking hardware for both the MKS80, and the MPG-80, the original user manual (both the MKS80 & MPG80), the C64-C memory cartridge, and the original programmer DIN cable that connects the MKS80 with the MPG-80.
I will ship the purchase in two separate boxes. I want to be sure that I can safely protect the sliders on the MPG80.” Click here to visit listing on eBay

Buchla Polyphonic Tuner Model 272e

“Buchla – 272e (4 stereo F.M.tuner) analog synthesizer module. Condition is Used. Shipped with USPS Priority Mail. This module also requires some special circuits built into the “power boat” for the module so that an antenna can be connected. If you are super-handy with electronics and/or ground loops, you may be able to fashion and antenna to your liking that doesn’t require the additional adaptations. But because these adaptations are required, we should talk about how you would like me to disassemble and convey those parts (which will take longer to handle and ship than just selling the module by itself). If you just want the module and plan to deal with antenna on your own, I’ve enabled the “make offer” feature.” Click here to visit listing on eBay

Sequential Circuits Six-Trak

“Classic Sequential Circuits Six Trak analogue poly synth.

Each voice based on the highly acclaimed CEM3394 chip with true VCO and 24db filter.
(these chips have been reissued so can cheaply be replaced if it were ever needed)

This synth is in amazing condition with hardly a scratch on her.

This one has been refurbished and has had the following done:
– Flying power lead replaced with a standard IEC connector for convenience
– All rubber contact buttons cleaned to improve performance
– Pots cleaned with switch cleaning fluid
– Dim red leds replaced with more clear blue variant
– Main PCB inspected for any issues (non found)

Has had use in a non smoking studio.” Click here to visit listing on eBay

EML Electrocomp 200

“Vintage 1970’s ElectroComp EML-200 Modular Synthesizer, in blue.

EML 200 is keyboard-less, making it more like an Expander module designed to interface directly with other EML equipment. Most notably, with the Model 300 manual controller which offered a 4×4 key matrix, pitch knobs, and an oscillator with envelope generator and VCA of its own. Today, you can use the 200 with analog synths other than EML with the properly modified CV/Gate connections and converters (its oscillators are a non-standard 1.20v/oct).

It does power up and the red power light is on in the pictures.

Overall in very good shape, with some scratches on the sides and back panel.

I did have them checked out, and had the necessary repairs\cleaning done to make them functional.

The unit was cleaned and tested. All the jacks, connections, and potenciometers were cleaned and checked.(Per the repair technician)

The sample and hold were repaired on this unit.

All original.” Click here to visit listing on eBay

Yamaha TX802

“This listing is for 1 x Yamaha TX802 FM synthesizer.

The unit functions as it should and is in excellent condition (please see images).

Important modifications have been carried out on this unit:

#1. Operating system upgrade to version 1.5

#2. Internal battery replaced to ensure patch storage while unit is powered down.

It is a 100v model and comes with a power transformer that allows for use in the UK.” Click here to visit listing on eBay

Akai AX60 Project Machine

“Akai AX60 Analogue Poly Synth.
In excellent condition.For it’s age it looks really really good.You wont find one better looking than this!!
It has never been gigged and has just been used in my studio.
It has developed a problem which is quite an easy fix if you know what your doing or want to get it serviced.

The synth was working perfectly a few days ago and the next day i turned it on and all the sounds had vanished.There are still sounds but not what i would call useable.

Either a new battery is needed or one of the voices has failed.Im no expert and i dont have the time or the patience to get it fixed.” Click here to visit listing on eBay

ARP 2600 with ARP 3620 Keyboard

“ARP 2600 Model 2601 Synthesizer for sale. This unit is one of if not the nicest black and orange 2600s we’ve seen. We bought it from someone who owned it since it was new. He rarely used it, and this is quite obvious from looking at it. (See photos)

One of the other 2600s we’re selling is also here on ebay for a fraction of this one’s price, so if you’re not looking for a 2600 in museum quality condition, you may be interested in that one instead. It received the same meticulous electronic restoration and future-proofing we’ve been doing to our 2600s for a long time now.

This unit was disassembled, cleaned inside and out, meticulously serviced AND FUTURE-PROOFED and fully and repeatedly tested by vintage synth specialists with decades of experience (us). This process required 31 hours of skilled labor. The result is an ARP 2601 that is much better than the rest.

This unit is working perfect, is ready to play, and will hopefully outlast all others.

In addition to any repairs, we did the following work to this unit:

-Fully disassembled, cleaned inside and out.
-Power supply rebuilt: new capacitors and trimpots.
-All tantalum capacitors replaced (these are a common source of failure in ARPs).
-ARP typically installed rubber gromets in between the reverb tank and wooden enclosure of their 2600s. For some reason, there were no gromets installed in this unit, so we installed new ones.
-All sliders and switches cleaned and lubricated.
-Molex connector terminals replaced for better connection.
-Keyboard fully rebuilt: removed and cleaned all keys, cleaned J-wires, removed and cleaned bus bars, replaced rubber bushings.
-Replaced Cinch-Jones keyboard connector socket.
-Replaced some metal hardware (screws, jack nut, etc).
-Burn in test.
-Multiple systematic tests of all functions.

Earlier revisions of the 2600 are notorious for having their modules sealed in black epoxy. This late version 2601’s circuits are all open, so if a component ever goes bad, repair should be easy.

Apart from a little rust on the metal hardware on the outside of the case (which we see a lot) and 1 or 2 tiny imperfections, we feel this unit looks immaculate. But please take a good look at the many detailed pictures posted here to see for yourself. We have 45 detailed photos of this 2600 but eBay only allows us to post a small number of photos.” Click here to visit listing on eBay

Roland JD-800

“Roland JD 800. Condition is Used. Collection in person only.

My beloved JD800 in need of some love.

Although it turns on, patches and memory intact and is perfectly useable as a sound module, 13 keys are not working. 2 are sticky and the rest are in responsive. It most likely needs a new contact strip or such like.

I’ve run the diagnostic test and all faders work fluidly with exception to the cut off that jumps in increments of 10. Most likely needs a good clean!

There’s a low mains hum from the outputs not uncommon for a synth this age (I bought it in 1996) it’s never bothered me and never been noticed on any recordings.

These machines when services go from £900 + so could be a great project for someone willing to rework the keys and cut off slider. Otherwise a great board for that authentic 90’s sound or worth sampling!

It’s a very heavy beast so please come and collect it!” Click here to visit listing on eBay