MATRIXSYNTH

PPG EVU Expansion Voice Unit

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"With Midi, OS 6.0. eproms of OS 8.3 included plus a brand new battery and ppg connection cable to connect to a waveterm or ppg Wave. New switch power supply and excellent cosmetically and technical condition. Extremely rare. With midi around 30 units built. No scratches. It already works with velocity and some other midi control functions"

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Oberheim OB-8 w/ Fatar Semi-Weighted Synth-Action Keybed

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"OB8 was fully serviced by Bell Tone Synth works in Philly four months ago and is working great. I also installed a new Fatar semi-weighted synth-action keybed, the same one used on current production high-end synths like the Minimoog Voyager, Prophet 10, and Schmidt 8."

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SEQUENTIAL CIRCUITS PROPHET VS Synthesizer SN 1041

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Additional Tone Tweakers Listings, also on Reverb

"This Prophet VS has been meticulously serviced and is working exactly as it should.

Tech notes:
Cleaned unit inside and out.
Cleaned all pots and key contacts.
Replaced display with a much better one that can easily be seen in the dark.
Replaced battery.
Reloaded patches.
Replaced aftertouch sensors as the originals rarely work anymore.
Replaced power supply capacitors as a preventative measure.
Reflowed certain solder joints as a preventative measure.
Performed multiple burn in tests.
Verified that all functions are working properly.

Note: As usual, the aftertouch response on the bottom and top keys may not work as well as other parts of the keyboard, due to design."

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ROLAND MKS-30 Planet S Analog Synthesizer

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Additional Tone Tweakers Listings, also on Reverb

"This unit was meticulously overhauled over a whopping 11 hours - which isn't a lot for a vintage polyphonic synth but is a lot for this model considering its relatively low resale value. The preventative work we did to this unit should make it more valuable than others you may find, which is reflected in its higher than usual price.

This unit was stripped down and cleaned inside and out. The 80017 chips all had their resin coating chemically removed as a preventative measure since they commonly fail when this coating isnt removed. Most people replace these chips with new clones instead of refurbishing them, but we like keeping parts original since that matters to many of our customers - if they wanted a synth made from new parts, they'd buy a new synth, not a vintage one. All tact switches were replaced for flawless operation. Power supply capacitors were replaced as a preventative measure. Removed, cleaned and lubed all pots. Removed old battery and replaced it with a new one. Cleaned all switches. Tested all functions systematically, twice. MIDI LED replaced. All tests passed. This unit sounds great and works great and should make its next owner very happy. Runs off 220 volts, so if you're not in a country where the voltage is 220v, you'll need an external transformer."

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KORG 707 FM Synthesizer

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Moog Sonic Six

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Roland JX-3P 61-Key Programmable Preset Polyphonic Synthesizer with PG-200 Programmer

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Aodyo Anyma Phi

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"Essentially the only physical modelling synth on the market. Pairs great with an EWI. Has a great PC-based programming UI for connecting oscillators, resonators, and effects. You can get a huge range of sounds on the Anyma Phi that just aren't available on any other hardware synth."