MATRIXSYNTH

Battlescarred Badass Roland SH-101

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via this Reverb listing

Pics of the inside below.

She ain’t gonna win any beauty contests, but she can kick your “I buy mint only” friends SH101’s butt any day.

Electronically perfect, cosmetically weird SH. It’s my fault…it was a UV-greened olive to brown gradient mess when I got it and I tried whitening the case and left it under UV lamps too long. You can see the original color on the battery door. While my process works wonders for keys and buttons, not so much for gray cases I guess. Oh well.

Despite the now quirky camo exterior, the electronics, rear case and keys are perfect. Power button is solid, no amount of wiggling and wobbling impacts anything. All functions were checked against another SH that I own (I’ve owned 4 and know them inside and out) and everything is spot on. All faders lubed with Deoxit F5, no crackles or jumps. There’s none of the dreaded battery leakage or other liquid damage present. It’s very clean, and as you’d expect sounds massive.

Properly matched PSU included."

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Roland TR-909 Rhythm Composer SN 392871

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via this Reverb listing

Additional SYNTH CITY Listings

"A true classic that's earned its stripes—this original TR-909 shows some light cosmetic wear, including faint handwritten notes from the original owner. We’ve cleaned it up carefully; some markings remain subtly visible, adding a bit of vintage charm and history.

Fully tested and working flawlessly, it delivers all the iconic TR-909 punch, groove, and analog-digital magic you expect. The power plug has been upgraded to a modern 3-prong AC connector for improved safety and convenience.

If you're after that authentic 909 mojo, this one’s ready to go. Includes original manual as shown."

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Studio Electronics - Boomstar 4072 MK1

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via this Reverb listing

Additional NOISEBUG Listings

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Studio Electronics - Boomstar SEM Mk1 SN 100252

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via this Reverb listing

Additional NOISEBUG Listings

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Vintage Oberheim Two Voice

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via this Reverb listing

"VINTAGE Oberheim Two Voice. Item was recently serviced by ROSEN SOUND in July of 2025! and is MIDI capable.

This Two Voice is a piece of synthesizer history and sounds incredible.

This Two Voice has minor Tolex wear on the left side of the synth (see attached photos)which is easily replaceable. Otherwise, this synth is in EXCELLENT physical condition and absolutely mint in performance."

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Vintage ARP 1613 & Mk II 1623 Sequencers w/ New Sliders

1613 via this eBay listing, also on Reverb

"The vintage ARP Sequencer is an exceptionally flexible analog step sequencer, offering independent control of two 16-step rows for complex patterns, modulation, and real-time performance tweaks. Renowned for its versatility, it can drive multiple synths, modulate parameters, or create evolving textures—making it a powerful centerpiece for any vintage or modular setup.

This is the real deal, a genuine vintage ARP sequencer, not a clone or remake! The sequencer is in very good physical condition and has just been serviced by ARP expert Synthchaser in October 2025. Work done included:

Synthchaser Precision slider upgrade. New, smooth, high precision Bourns sliders. The difference in the way these sliders feel and perform compared to the originals is a huge improvement.
Synthchaser replacement pushbutton switches - All new pushbutton switches -- the original switch caps are still installed so it looks the same from the outside.
Recapped all polarized capacitors - including power supply and all tantalum capacitors
New nuts and washers
Calibrated to factory spec

The ARP Sequencer has Tini-D jacks (like the ARP 2600 and other vintage ARP gear), which are slightly larger than 3.5mm patch cords. 3.5mm patch cords will still work, but for the best connection it's advised to use Tini-D patch cords."

1623 via this eBay listing, also on Reverb

The vintage ARP Sequencer is an exceptionally flexible analog step sequencer, offering independent control of two 16-step rows for complex patterns, modulation, and real-time performance tweaks. Renowned for its versatility, it can drive multiple synths, modulate parameters, or create evolving textures—making it a powerful centerpiece for any vintage or modular setup.

This is the real deal, a genuine vintage ARP sequencer, not a clone or remake! A real Mk II Black & Orange ARP Sequencer is rare! The sequencer is in excellent physical condition and has just been serviced by ARP expert Synthchaser in October 2025. Work done included:

Synthchaser Precision slider upgrade. New, smooth, high precision Bourns sliders. The difference in the way these sliders feel and perform compared to the originals is a huge improvement.
Recapped all polarized capacitors - including power supply and all tantalum capacitors
Calibrated to factory spec
The ARP Sequencer has Tini-D jacks (like the ARP 2600 and other vintage ARP gear), which are slightly larger than 3.5mm patch cords. 3.5mm patch cords will still work, but for the best connection it's advised to use Tini-D patch cords.

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Vintage Kurzweil K 150 FS Fourier Synthesizer (Model K-150FS) Rack Mount SN 87060023

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing

Pics of the inside below.

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New England Digital Synclavier Brochures

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New England Digital Synclavier 9600 Polyphonic Sampling System Brochure

via this eBay listing

"RARE! New England Digital Synclavier 9600 Polyphonic Sampling System Brochure

Yes, this is the 9600, and yes, this is in English.

This is THE RAREST and MOST SOUGHT AFTER of the 1989 new system brochures that that fake foreign website scanned the photos from 25+ years ago to show fake systems on the website (instead of real ones like Synclav com has shown for 20+ years). This is the original source of the scan, at least for the Synclavier 9600 model. Those photos show empty boxes. Uhm, what's holding that beige door closed (no locks)? And exactly what software generates that screen image?

This incredibly rare brochure gives all the information, and shows all the specs of the Synclavier 9600. And surprise! The maximum polyphonic sampling memory is not "1.5GB", lulz.

And, lastly, Synhouse has the Synclavier 9600 in stock (two kinds, actually). Nobody else does."

New England Digital Synclavier Brochure VPK Sample-to-Disk VT640

via this eBay listing

"This is an incredibly rare brochure from the summer of 1984 (when NED was working on polyphonic sampling Synclavier to be shown October 1984 and there was no actual system in production, the few shipped were hybrids of the Synclavier V/PK retrofitted to a Synclavier II Control Unit) that shows things that NED didn't exactly make, ever.

This was their first---and last---mention of "The Tapeless Studio" meaning the sequencer (later that meant the Direct-to-Disk system). It describes the SMPTE Reader Option without using that term because it wasn't yet available and they hadn't figured out how it would be done yet (similar to the 1987 discussion of the not-yet-released 3rd party SMPTE reader for the Linn 9000, saying they weren't sure whether or not it would require additional hardware to be added to the Linn 9000....that's the sound of someone who hasn't ever used SMPTE and doesn't know what it is), and it shows a graphical flow chart showing polyphonic sampling and multi-channel outputs (neither available then as building blocks), and is intentionally vague about the "floppy disk system" and "Winchester disks", as they didn't really have the set offering for that (high density Superfloppy, not out until 1985, and 5mb and 10mb IMI MFM Winchester drives being common, neither with SCSI until 9/1985).

It describes the Stereo Option, Sample-to-Disk, SCRIPT/MAX, and different Control Unit enclosures.

Most strangely, it shows a V/PK that never existed, with a back panel that wasn't made, with Synclavier II connectors that were never used and, sadly, an on/off power switch that they never put on this $11,000 machine.

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Casio HT 6000 Top of the line Synthesiser that’s also 80s weirdness

video upload by Ted murena

"Casio HT6000 is a Top of line Synthesiser that’s undeniably interesting but also weird. It has a combination of digital and analog features and more kit that some contemporary pr synths. Lets Go down this lost highway together"