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Korg Poly-61

“Here we have my

Working KORG POLY-61 Vintage 1980’s Synthesizer Keyboard

I have had this a long long time, and over the years it has seen more action than Axel Rose.

Over the years I have had hard Red Oak sides put on, as the chipboard that was originally there was just falling to bits as they all do.

I have not used it for over a year, but it is fully functioning. Just needs some switch cleaner in the volume knob as it is a little scratchy when turned. With time and use this should dissipate.

Also, where the modulation/Pitch bend joystick is, the panel does move a bit. It has done this since the sides were replaced but it does not affect playing or using of the joystick. It could use some shorter screws in it I think. Just never bothered with it as it did not detract from its use. Just thought I would mention it as someone may want to fix that.

Other that what I have mentioned , it is working as it should.” Click here to visit listing on eBay

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Korg Poly-61

“Korg Poly-61 Programmable Polyphonic Synthesizer” Click here to visit listing on eBay

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Korg MS2000

“Superb synth with so much flexibility, amazing sounds, packed with features and controls for any type of music. Great condition, but used of course, so some signs of wear. Perfect working order with original manual and power supply.” Click here to visit listing on eBay

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Korg Mini-Pops 7

“Please see pics for cosmetic condition.
In full working order, and very well cared for.

This is a 100v unit – a step-down transformer MUST be used if using this in the UK. These can be bought cheaply on eBay or elsewhere.” Click here to visit listing on eBay

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Korg EX-800

“The Korg EX-800 Rack mount Synthesiser is a versatile and powerful tool for any musician or DJ. With MIDI (DIN) In and Out ports, this synthesiser can easily integrate into any setup. The brand Korg is well-known for producing high-quality musical equipment, and this model is no exception.

The EX800 is perfect for those looking for a reliable and intuitive synthesiser with a sleek design. Its rack-mountable format makes it easy to incorporate into any studio or live performance setup. Whether you’re a seasoned musician or just starting out, the Korg EX-800 Rack mount Synthesiser is a great choice for anyone looking to elevate their music to the next level.

Working 100%

Psu and rack ears” Click here to visit listing on eBay

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Korg MS2000R

“Selling my Korg MS2000R Analog Modeling Synthesizer, (Desktop module) fantastic virtual-analog modeling synthesizer, excellent sequencing and modulation capabilities. makes for some fantastic sound design and patch creation. In very good condition, works without any issues. Power supply and original packaging included.” Click here to visit listing on eBay

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Yamaha CS-01

“This Yamaha CS-01 vintage synthesizer is a great find for any musician or collector. With 32 keys and a sleek design, it’s perfect for creating unique sounds and songs. The built-in effects add a lot of versatility to the instrument, making it suitable for both beginners and professionals.

Perfect Synthesizer to learn how to play music or if you’re an experienced EDM producer who wants a versatile and functional bass machine. This machine was purchased in 1984. Includes the original box and adapter.

As you can see in the pictures, There are scratches and marks from use. The box has tape damage.” Click here to visit listing on eBay

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Yamaha DX7

“Yamaha DX7 programmable digital synthesizer, in good working condition, with padded, sturdy case, 2 data rom cartridges and 1 data ram cartridge (for storing user-created patches), and a music stand that attaches to the instrument. This is the original DX7, purchased new by seller, kept in good condition. 61-key keyboard with velocity and aftertouch sensitivity. All keys and controls are in working condition. ” Click here to visit listing on eBay

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Sequential Circuits Multi-Trak

“Sequential Circuits Multi-Trak synthesizer from 1985 in excellent working and cosmetic condition. Listing includes the synthesizer, original manuals and power supply as shown.”
Click here to visit listing on eBay

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Sequential Circuits Prophet 600

“Sequential 600 analog polyphonic synthesizer from the 1980’s. Very good condition. A few scuffs and scratches here and there but functionally good. All controls work well. 6 voice polyphony. 2 on board sequencers. 2 oscillators per voice. PolyMod feature similar to Prophet 5. 100 patch memory locations. 2 Arpeggio functions. Latest OS installed so no issues with MIDI. Includes power cable, operation manual and service manual. Prefer local pickup but will ship.” Click here to visit listing on eBay

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ARP Axxe

“This is an Arp Axxe vintage analog synthesizer.
It sounds beautiful! (check out the video). I owned all three versions of the Axxe and in my opinion this one is the best sounding one.

Overall in a good working condition with a few small issues so please read carefully.

A couple of the sliders don’t track very well – I believe it’s the S&H slider, the pulse width and the filter modulation LFO slider. They will not change values until reached a certain point so if you wanted these to work perfectly, they will need to be cleaned or replaced.
One of the keys occasionally doesn’t track well. I believe it’s either the high A or A flat. (forgive me, I should have wrote it down when demoing).

Please be aware that this is a 50 years old synth and as expected, some of the sliders might move less smooth than others. Same goes to the touch of keys).

Cosmetically, there are some signs of wear. Most noticeably, a big chip in the corner of the right wood panel. There are some scratches, marks here and there.
Overall it’s in a nice condition.
Please refer to photos for condition.” Click here to visit listing on eBay

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ARP String Ensemble SE-IV

“ARP String Ensemble Mk. II Synthesizer, same as Solina, in custom flight case. There is cosmetic damage to the Modulation Switch label, otherwise it is almost as if it just left the factory.” Click here to visit listing on eBay

Categories ARP

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ARP Little Brother

“Works well. Could use a servicing on tuning. Tuning range and scale are off. All footages and waveforms work well. Vibrato works well when no vibrato delay is engaged. The vibrato delay is triggered off gate in. Please watch demo video embedded and look at all photos. Missing one rubber foot on bottom. Comes with an old hard case.” Click here to visit listing on eBay

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Kawai K4R

“This comes with the original power supply. I plugged it in and took a few pictures of what the screen was saying. I don’t know much about this type of equipment so I haven’t tested it any further than that.” Click here to visit listing on eBay

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Eurorack Modular

“This is my modular setup that I used for a while, I just haven’t been using modular as much recently.

Includes: Intellijel Dixie II+, Intellijel uVCA, Lumanoise 808 Cymbal Drone Generator, EMW Sequential Voltage 8, Doepfer A-138 (Exponential) Mixer, Ladik C-030, VoicAs 2CVLFO, Tiptop Audio Happy ending case (with its power supply) and a lot of patch cables.

Everything works and is in great shape except the Lumanoise 808 drone module, which has some rack rash (and cracks in the panel in the top corners, it’s made of brittle wood) but other than its cosmetic damage, the module works flawlessly.” Click here to visit listing on eBay

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“This is a large semi-modular synthesizer, designed in Australia and released as a kit by Electronics Today International magazine in 1973. The large aluminium panel pivots forward for maintenance. Its 22×22 matrix switchboard, joystick, complex modulation and feature set is reminsicent of a larger EMS VCS3, a comparison enhanced by the use of genuine Cliff “little Dalek” knobs.

The main modules in the 4600 design were repackaged for the (smaller) ETI 3600 and the lightly larger Maplin 5600 kit synthesizers. Its notable features are volts-per-herz VCOS (rather than volts-per-Octave linear VCOs), complex Transient Generators that are like simple three stage sequencers, and a different-sounding VCF.

This is a rare, powerful and unique synthesizer that needs some TLC from a competent builder to unlock its potential.

STORY

In the early 80s before it had been completely built, it suffered damage (the plaster ceiling collapsed on it, because of a shoddy repair job after the previous tenants, a punk gang, had a “demolition party” that destroyed all internal walls). The keyboard was destroyed and there seemed little reason to replace it (the first 4600 keyboard circuitry was problematic and had been replaced by a design from the Fairlight team.) There was some scratches to the case and a lot of dust, though the pots did not seem scratchy.

Periodically I would bring it out of storage and work on it, with various planned enhancements:

I cut the front off and added panels to allow patch cords to connect with other modules, as well as using the matrix.
I replaced the internal wiring with shielded cabling: this was very successful in removing beehive noise but its .
I insulated some pots against earthing to the chassis that caused hum.
I put in a Neutrix Powercon replacement for the (dangerous?) use of an XLR power connector.

But I lost the interest to complete it as I started to design and build my own modules, and as my build skills improved.

Due to a house move, it is time for it to find some museum, engineer or technically-capable hobbyist to complete it.

MODULE STATUS

This was the status of the modules five years ago.

Power Supply – Tested and working.
Oscillator 1 – All Range settings, Tune, Free run, Shape and All waveforms tested and working.
Oscillator 2 – All Range settings, Tune, Free run, Shape and All waveforms tested and working.
Oscillator 3 – All Range settings, Tune, Free run, Shape and All waveforms tested and working.
Oscillator 4 – All Range settings, Tune, Free run, Shape and All waveforms tested and working.
Oscillator 4, Second output – All waveforms, including noise selection and Controller tested and working.
Noise generator – Pink and white tested and working.
Controller – tested and working.
Mixer 1 – Tested and working.
Mixer 2 – Tested and working.
Mixer 3 – Tested and working.
Mixer 4 – Tested and working.
Mixer 5 – Tested and working.
Main Output – Tested and working
Headphone Output – Tested and working

Keyboard Control – Sweep, Glide, Transient, Modulation and Tune omitted
Keyboard – Omitted

Filter 1 – Built but not tested.
Filter 2 – Built but not tested
Joystick – Built but not tested
External Inputs 1 and 2 – Built but not tested
Amplifiers 1 and 2 – Built but not tested
Envelope control – Built but not tested
Transient 1 – Built but not tested
Transient 2 – Built but not tested

Equalizer – Not built: requires handwound inductors, or could be replaced by other design.
Reverb – Built but not tested (to be confirmed)

Box: black laminate and sturdy plywood, seen better days. Panel inclines back. OK for transport and installed use, but not not suitable for the road.

ENHANCEMENTS

Envelope and Transient Generators: LEDs drilled to allow blinkenlicht for sequence position of Transients. Added pots for Peak or velocity.
Internal wiring to matrix mixer uses ugly shielded cable, which utterly removes otherwise bad beehive noise.
Added bottom row of panels to break out the modules’ inputs and outputs: not connected.
Joystick on bottom row: not connected
Neutrix Powercon connector on bottom row: not connected.
VCO and Mixer: high quality op-amps generally used instead of LM301s gives much crisper sound
Uses genuine Cliff knobs and teardrop pointers
Power supply: capacitors re-furbished 10 years ago. Side PC board added to allow LED and protection.

EXTRAS

Reverb tank provided
Extra hard-to-source LM4066 switches: some extra will be provided for future spares
Some extra Cliff knobs will be provided
Powercon and XLR cable provided (Australian plugs)

MISSING

If I track down the build manual, I will provide that. It is available on the WWW anyway.
If I track down extra matrix pins, I will provide them.
The keyboard PCB (lower left) is not available.

SIZE

Weight: approx 20kg
Size: 105 x 45 x 30 cm”
Click here to visit listing on eBay

Categories ETI

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Future Retro Revolution

“The homage to the classic 303 which is now a classic itself.

303 with a better sequencer more conducive to on the fly edits and live use. Midi implementation. Also with a host of onboard effects so no need to break out those guitar pedals.

In good condition for its age a few paint scrapes but nothing egregious. As good as you could hope for considering its age.

Comes with a power supply suitable for USA I have included details in the second photo.” Click here to visit listing on eBay

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Kawai K3m

“This Kawai K3m vintage rackmount synthesizer is a must-have for any musician or producer looking for a classic analog sound. With its warm wave oscillator and unique tone, this synthesizer is sure to inspire creativity. The Kawai brand is known for its high-quality musical equipment, and this synthesizer is no exception.

Kawai K3m Vintage Rackmount Wave Synthesizer Sound Module Turns on (no other test). Condition is Used. Shipped with USPS Ground Advantage.” Click here to visit listing on eBay

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Teenage Engineering OP-1

“Introducing the Teenage Engineering OP-1 Portable Keyboard Synthesizer, perfect for all your musical needs! This synthesizer is packed with features such as a sequencer and USB compatibility, making it easy to use and transport. With 24 keys and a digital output, this synthesizer is perfect for any musician looking for a portable and compact device.

The Teenage Engineering OP-1 Portable Keyboard Synthesizer is ideal for both beginners and experienced musicians alike. Its compact size and lightweight design make it easy to transport, while its digital output ensures high-quality sound. Whether you’re playing live or just practicing at home, this synthesizer is sure to impress.

Includes carrying case, usb cable, and some accessories.” Click here to visit listing on eBay

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Moog Memorymoog

“Incredibly powerful in both synthesis and tone—truly mind-blowing. You won’t find another fully functional Memorymoog at this price!

Pros:

Every function tested—100% operational.
Tunes perfectly.
Good battery (installed in 2013)—a joy to play.
Kenton MIDI (tested and fully functional).
Includes service documentation and original manual.
Bonus: Some Moog pedals included!
Cons:

Cosmetic imperfections: A small dent on the back of the case.
One of the concentric knobs is not original, but works perfectly.” Click here to visit listing on eBay

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Roland Juno 106 Project Machine

“Selling my Roland Juno 106. Turns on and produces noise, but looks to need new voice chips because the voices come and go. The sliders all function correctly. This synth will be sold AS IS for parts not working. Could be a good pickup for someone that knows how to fix these.” Click here to visit listing on eBay

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Roland CR-78

“Roland CompuRhythm CR-78 Drum Machine – Iconic Percussion Sounds Tested” Click here to visit listing on eBay

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Korg Polysix Project Machine

“korg polysix analog synth/keyboard (for parts not working). It seems to power on, the lights come on. It doesn’t seem to do anything else. I’m not sure what’s wrong with it. It will most likely need repairs. I also don’t know how to test this, and I would prefer to sell “as-is.” It is missing 2 of the button covers. Some pealing on the vinyl on the wood. Some scratches on the keyboard itself. The cord appears to be in decent condition. It will definitely need some love. The right person can fix this up and have if sounding great. Please see the pictures for the condition.” Click here to visit listing on eBay

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Korg MS2000B

“Korg Ms2000B for sale comes with Mic

Plug casting came a loose about a year ago at a gig so I taped it and haven’t had an issue with it.” Click here to visit listing on eBay

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Korg DW-6000

“KORG DW-6000 Vintage Keyboard Synthesizer untested”

Click here to visit listing on eBay

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Roland CR-5000 Project Machine

“First off: I took this machine in trade for some other gear.

The previous owner told me some of the buttons did not work.

“No big deal,” I thought.

I’ve been a bench repair person for years. How hard could it be? A little contact cleaner, some elbow grease, and everything will be fine!

I started looking on the web and found that was not the case.

I have decided this is a repair that could end in tears, so I am passing this on to someone who feels up to the challenge.

The unit powers up. There is a single brown wire that has come unsoldered from the circuit board (see picture).

Comes with 2 copies of manual, 3 foot pedals, assorted patch cords, adapters and plastic dust cover.

Original box is in ragged shape.” Click here to visit listing on eBay

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Yamaha CS15D

“Immaculate condition and sounds

fantastic! Probably between excellent

and mint condition.” Click here to visit listing on eBay

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Yamaha TG100

“Works great! Includes manual and high quality MEAN WELL power supply.

Device has scratches and marks all over but functions properly. Screen has some burn, but is still clearly visible (it is not a backlit screen).” Click here to visit listing on eBay

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Yamaha BC1

“This unit has been lightly used and shows minimal wear but remains fully functional. It includes the original pouch and a 1/8″ to 1/4″ adapter for added versatility.”
Click here to visit listing on eBay

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Yamaha TX81Z

“YAMAHA TX81Z FM Sound Source Synthesizer FM Tone Generator 100V Untested”
Click here to visit listing on eBay

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Yamaha TX816

“Yamaha TX816 – gently used. Kept in a rack for nearly 20 years. Serial number: 1796

Powers up and buttons work. Has not been professionally serviced recently.

Give her a good home!” Click here to visit listing on eBay