SEQUENTIAL TOM 420 Serviced w/ Extras

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via this Reverb listing

"This legendary drum box has been fully serviced to perfection, ensuring it performs just like it did back in the day, if not better. Don't let the blemishes in it's paint fool you. This TOM Drum Machine has been fully gone through from top to bottom. Nothing has been left to chance. Totally rebuilt to function beyond brand new.

Here's what makes it a must-have:

- Complete Rebuild of Power Supply: Featuring new rectifying diodes, filter capacitors, and voltage regulators for unmatched reliability.

- All New Tactile Switches: Every single switch on this unit has been unsoldered and replaced with a brand new part. Guaranteeing that you will not have a switch fail in the next 30+ years. You will get smooth, responsive, operation. We use OMRON brand tactile switches, the best and built to last.

- Fully Expanded Sequencer Memory (RARE): A rare expansion option from Sequential back in the day, and even more rare now. Very few SCI TOM in the world have expanded sequencer memory. This upgrade more than quadrupled the available pattern storage memory. More room for your beats, making this a highly coveted feature.

- Tauntek TOM16 CPU Upgrade: The famed Tauntek MOD is no longer made. This update to the SCI TOM enhances performance, adding new features to the TOM that allow you to switch the sounds on the fly.

- 16 Internal Sound banks (Cartridges): This modification also builds in 16 expansion cartridges worth of sounds, accessible through the user interface. This upgrade includes all original SCI Factory Carts and the best from DRUMWARE (DigiDesign).

- HKA Designs 'Classics Cartridge': On top of the 16 built in sound banks, the HKA Classics Cart adds eight more cartridges worth of sounds from Legendary drum computers from Oberheim DMX and DX, Linn DRUM and LM-1.

- Printed Manual: A reproduction printing of the original TOM 420 manual that details all the features and functions so that you can jump straight in to producing awesome retro grooves with the famed Sequential drum machine.

- Rugged IP67 Water & Dust proof Flight Case: Your SCI TOM will ship in a custom fit, lockable 🔒 Rugged IP68 💦 Waterproof / Dust-proof Impact Resistant Protective Flight Case. Making sure that your investment arrives to you in ultimate safety and comfort."

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Sequential DrumTraks 12-Voice Drum Machine SN 1103

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via this Reverb listing

Additional SYNTH CITY Listings

"One of the earliest MIDI capable drum machines, the Sequential Circuits Drumtraks is punchy, unique, and will integrate effortlessly into a contemporary studio. The sound of this thing is fantastic, with 13 8-bit sample based drum sounds and a powerful pattern sequencer. This drum machine is fully tested and in great working condition. Serial No. 1103"

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Oberheim OB-8 61-Key 8-Voice Synthesizer SN C50516

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via this Reverb listing

Additional SYNTH CITY Listings

"This monstrous synth is in great shape and sounds fantastic. There are eight analog voices which can be panned individually for some really interesting stereo sounds. The keyboard can be split or doubled and there are two oscillators per voice. It is a very warm sounding synth great for massive chords, basses and leads. This model has MIDI in out and thru.

It is quite a beast, with all the great 80s vibe and that classic Oberheim sound. In fantastic working and cometic condition overall. Serial No. 050516

Service notes:

-Replaced firmware IC
-Replaced several failied CMOS logic chips
-Recapped bend assembly and processor pcbs
-Repaired D/A converters on voice boards
-Cleaned panel controls
-Fully calibrated
-Repaired autotune circuit
-Replaced missing hardware"

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Emu EIII Emulator 3 Three

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via this eBay listing

Additional Tone Tweakers Listings

"This is not your typical Emulator III. This unit has been meticulously refurbished over dozens of hours, sparing no expense, and thoroughly tested, and is working great. RS-442 interface and external SCSI devices were not tested since we don't have external devices for testing. We see no reason for them not to work but only because we didnt test them, we cant guarantee it. Will be packed right to arrive intact. Will ship internationally."

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Emu Vintage Keys Plus SN 039401016

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

via this eBay listing

Additional Tone Tweakers Listings

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Suzuki Q Chord Digital Guitar QC-1 with Case 10 Cartridges, And Manual

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via this eBay listing

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Oberheim Matrix 1000 Quick Demo

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video upload by Roland Perez

via this Reverb listing, also on eBay

"Vintage Analog Goodness.. Oberheim Matrix 1000 White Panel in great working condition, no operational issues. It all works great, sounds amazing and looks just stunning! This is just by far the best oberheim for the money. Classic rich pads, strings, brass, basses, leads all for a low price considering how much OB8, OBXA, Xpanders are selling for nowadays. You can edit these with various software editors, apps, or external controllers readily available. Great score for a rare and lush Oberheim!

CHECK OUT VIDEO ATTACHED FOR THIS ACTUAL MATRIX!"

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Behringer Grind: 50 Dark Modular Patches+Patterns. Jam Demo

video upload by Anton Anru

"🧿 Encrypted Pulse is a collection of 50 patches for the semi-modular synthesizer Behringer Grind. The bank includes: 11 Basses, 12 Leads, 12 Plucks, and 15 Chords.
⚙️ The centerpiece of Grind is its multi-mode oscillator — a powerful and flexible sound source capable of generating a wide variety of tones. This collection was born from an exploration of that oscillator’s potential in combination with the synth’s other sections and the patchbay.

📦 Get these patches: https://antonanru.sellfy.store/p/grin...

🔮 In this collection, I aimed to create dark, noisy, gritty, and sometimes atonal presets suitable for genres such as techno, ambient, IDM, industrial, deep, house, progressive, downtempo, breaks, drum 'n' bass, and others.

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Creative Cross Modulating Eurorack Filters // Double Bubble by Thonk Synth

video upload by DivKid

"Here we have a new Eurorack DIY stereo filter from Thonk Synth. It's a stereo analogue multi mode filter made for creative modulation. Whether it's dual parallel channels, series filer routings, mono to stereo, stereo in and out or even mono filtering with a separate filter modulator (a filter modulator? What? - heads up, it's ace!). Check out the patches below."



"Double Bubble is a 16HP Eurorack dual analog multi‑mode filter designed for creative sound design and flexible signal processing. Each channel features an analog filter core that can operate in one of four modes – Low‑Pass, High‑Pass, Band‑Pass, or Notch. The input of Channel A is normalled to Channel B so its easy to create stereo filter patches from a mono sound source.

The two channels of Double Bubble can run as independent dual mono filters or be linked together for stereo operation. The filters can also be routed in serial configuration to create more complex signal paths such as a variable width bandpass or notch phasing effects. The SPACING control and wide range of CV inputs give deep modulation possibilities such as dynamic formant style filtering.

The FEEDBACK and XMOD (cross‑modulation) controls add further interaction between the two channels, ranging from subtle harmonic enhancement at low settings to more extreme, self‑modulating textures when increased. The dedicated V/OCT inputs for each channel allow the filters to function as FM oscillators or tone sources when pushed into self‑oscillation. This flexibility allows the Double Bubble to cover a wide range of roles, from precision cascading filter patches to dynamic stereo filtering and experimental feedback adventures!

Features:

Dual analog VCF with LP, HP, BP & Notch outputs
Resonance control per channel with switchable compensation
Mono, serial, parallel, stereo link routing options.
Cross modulation (XMod), FM and V/oct inputs per channel
Feedback with positive & negative phase
Frequency Offset Spacing with CV control
LED indicators for visual feedback on modulation and modes.
Designed in-house at Thonk"

YAMAHA TQ5 Bass

video upload by Akihiko Matsumoto

"TQ5 Sysex Bass Presets: FMWarpBass.syx, TriRave.syx & OldDubStep.syx from https://akihikomatsumoto.sellfy.store...

Raw FM textures for forward-thinking bass music producers
This pack captures the unmistakable character of Yamaha’s late 1980s 4-operator FM synths, with all their sharp digital edges and lo-fi charm intact. The TQ5, often hidden in the shadow of its more famous siblings, holds a unique place in synthesis history. It delivers angular, glassy tones that feel both futuristic and retro, with a sound design potential that quietly laid the groundwork for timbres now celebrated in modern club music.

Created for producers who care about texture, this collection offers bass and drum sounds with a distinct edge. Artifacts, aliasing, and resolution quirks are not just preserved but embraced, giving each sample a bite that generic VSTs rarely achieve."

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