MATRIXSYNTH

Friday, March 20, 2026

Abstrakt Instruments Avalon (+SEM)

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via this Vemia listing

Click the auction link on top when you get there for additional listings.

"Super-rare Avalon bassline synth, only ever made in very limited runs. Boxed, with quick start guide and UK power supply. Plus the optional extra SEM filter card. Super condition - see photos! The mains plug will be stowed safely behind the packing materials, in case you are worried about shipping safety. VEMIA will collect and cover with card (6GBP), and then ship economically."

Moog Minimoog Voyager Anniversary - Blue

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via this Vemia listing

Click the auction link on top when you get there for additional listings.

"In excellent condition, only used in a pet-free and smoke-free home studio. Apart from a small dent (see photo), no external or internal flaws.

It has been improved by famous Moog tech Rudi Linhard, i.e. memory upgrade (1024 presets), slew rate mod, aftertouch mod, and panel backlight modification - the original Anniversary Edition machines had a problem with an audible whine from the (otherwise beautiful and extremely useful) panel backlight. Rudi has re-calibrated this so that it is only noticeable when the backlight is turned to maximum.

This lovely synth is available for collection from Nuremberg, or VEMIA can organise collection / packing / delivery at cost."

DSI Pro 2 SN 00862

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via this Vemia listing

Click the auction link on top when you get there for additional listings.

"dave smith pro 2, good condition, latest firmware installed. Has a few marks from use, see photos, comes with printed out manual. VEMIA can collect and pack: 24GBP."

Dave Smith Instruments Evolver Desktop Synthesizer SN 02267

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via this listing

Additional Perfect Circuit listings

Yamaha CS01 Analog Keyboard Synthesizer

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via this listing

Additional Perfect Circuit listings

Yamaha DX7IIFD with E! Upgrade

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via this listing

Additional Perfect Circuit listings

Korg Trident TRD 8-voice Polyphonic Programmable Analog Synthesizer SN 31186



via this eBay listing

Roland Juno-60 w/ Kenton Pro DCB MK3 DCB to MIDI converter

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via this eBay listing

ARP 2600P Keyboard Synthesizer SN 26767 w/ Docs

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via this eBay listing

"ARP 2600P Keyboard Synthesizer Analog 49-Key Faders CV Gate In/Out"

Super JX and the MPG-7X


video upload by Starsky Carr

"The Roland Super JX (MKS-70 / JX-10) is one of Roland’s most underrated analogue polysynths. Released in 1986, it was effectively two JX-8P synth engines in one instrument, giving you 12 voices of DCO analogue synthesis, huge pads, powerful basses, and classic mid-80s Roland character.

In this video I take a deep dive into the Roland MKS-70 Super Jupiter rack synth, paired with the Retroaktiv MPG-7X programmer and the Vecoven PWM upgrade, which massively expands the capabilities of the original synth.

We explore how the controller transforms the experience compared with the original menu-driven interface, and look at the additional synthesis power introduced by the Vecoven upgrade including true PWM, additional envelopes, extra LFO, and expanded modulation routing.

Along the way I demonstrate a range of sounds including pads, basses, evolving textures and layered patches, showing why the Super JX became famous for its huge analogue pads and rich detuned sounds.

I also look at some of the performance features of the MPG-7X such as assignable controls, patch generation, chord mode, velocity crossfading and MIDI integration, which make this combination feel like a modern analogue synthesizer despite the vintage hardware.

If you're into vintage Roland synths, analogue polysynths, or classic 80s synthesis, the Super JX is a fascinating instrument sitting right at the transition between the analogue era and the rise of digital synths like the DX7.

In this video
Roland MKS-70 Super Jupiter overview
Retroaktiv MPG-7X controller deep dive
Vecoven PWM upgrade explained
Sound design examples and patch demos
Dual-layer patches and detuned pad sounds
Performance features and MIDI control

Gear used
Roland MKS-70 Super Jupiter
Retroaktiv MPG-7X controller
Vecoven PWM upgrade"
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