altstrument - A directory of custom and third-party firmware and tools for music hardware.

via the creator of the site:

"I just launched altstrument.org, a free directory of custom and third-party firmware and tools for music hardware.

It lists 544 custom firmwares and 88 host-side tools (editors, flashers, SDKs) across 120 devices from 45 manufacturers: Elektron boxes, Akai MPCs, Korg's logue synths, norns and monome, Mutable Instruments and Noise Engineering modules, the M-Vave FM-1, the Music Thing Workshop Computer and more. Each entry records who made it, where the source lives, its license, its version history and whether it's still maintained. The site links to the projects and never hosts firmware files.

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Gyro 1.2 Free Update - Global Key Lock, Chordset Generator & More - 10K Audio

video upload by 10K Audio

"Out now: Gyro 1.2 by 10K Audio
A free update for all existing Gyro users.

Limited-time launch offer: Save 30% on Gyro Pro and Play-to-Pro upgrades.
Get Gyro: https://10k.audio/gyro

0:00 Introduction to Gyro 1.2
0:14 Undo / Redo
0:32 Global Key Lock
1:15 Chordset Generator
2:02 Individual Chord Locks
2:31 NKS Support
2:47 ‘All Sounds’ Play Mode"

"What’s new in Gyro 1.2:

Global Key Lock: Keep presets and chord sets within a selected root note and scale.

Chordset Generator: Create complete chord sets from up to four user-selected chords. Available in Gyro Pro.

Undo / Redo: Move backward and forward through Gyro’s randomization history.

‘All Sounds’ Play Mode: Trigger all four sound engines together from a single MIDI note.

NKS Integration: Browse presets, control key parameters and use Light Guide integration with NKS 1 and NKS 2 hardware.

Expanded Preset Library: New full presets and subpresets for Gyro Play and Gyro Pro.

Reduced CPU Consumption: Muted sounds no longer consume unnecessary CPU resources."

Also see this previous post on v1.1.

Waveroom Synth | 10 Factory Presets | Sound Demo

video upload by Waveroom

"Get Waveroom Synth: https://waveroom.lemonsqueezy.com/che...
Windows x64: Standalone + VST3. A compatible VST3 host is required for the plugin. One-time price: KRW 39,000. Taxes may apply at checkout.

Ten factory presets from Waveroom Synth 0.12.1: moving arpeggios, bright leads, bass, plucks, keys, mallets, pads, wobble and atmospheric texture.

All sounds come directly from the full Windows VST3, played with original MIDI. Factory effects are retained. The genuine product interface is rendered offline alongside the same performance. Audio is level-matched per preset, with short seam fades and trailing near-silence trimmed. No backing music or external audio effects.

Presets in order: Lattice Current, Solar Lead, Furnace Bass, Nylon Spark, Sunday Organ, Plate Mallets, Amber Pad, Talking Alloy, Rain on Glass, Nebula Flare."

Ebb and Flow | Ambient with upcoming modules from Ormer in VCV Rack

video upload by Omri Cohen

"I've built and patch around a few upcoming modules from Ormer Modular: Wake, a delay module, Haar, a reverb, and Fluke, a random generator."

Elektron Digitone II 16-Track Polyphonic Digital Synthesizer

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

via this listing

Additional Perfect Circuit listings

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Dreadbox Typhon Analog Synthesizer Desktop Module

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

via this listing

Additional Perfect Circuit listings

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Dave Smith Instruments Tempest Analog Synthesizer + Drum Machine SN 03029

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

via this listing

Additional Perfect Circuit listings

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Sequential Take 5 Keyboard SN 00247

via this Reverb listing

Additional CONTROL Listings

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Moog Minimoog Voyager Performer Edition Select Series White with Soft Case

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

via this Reverb listing

Additional CONTROL Listings

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Digital Keyboards Synergy II+ 2 synthesizer w computer guts SN 01209

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

via this eBay listing

Additional Tone Tweakers Listings

Pics of the inside below.

"This unit was professionally serviced. The Synergy II+ is a digital additive/FM synthesizer that sounds like no other. Somewhat similar to the extremely popular Yamaha DX7, it's tone is mellower and warmer. A popular website states 700-800 were made and estimates less than 100 are in operation today. We don't know how they came up with this estimation, but this one's working great, as we just fully serviced it. Famous users include Jay Wires, Wendy Carlos, BT (crumar gds), Junkie XL and Steely Dan. Carlos used it on the Tron soundtrack and other recordings.

Previously, one needed an old Kaypro computer with special software to edit sounds, but someone recently developed an editor that can be run on a modern computer. We haven't used it yet but are really excited to. Please buy this now, before we decide to keep it!

This particular example includes the circuitry of a Kaypro or equivalent computer's CPU. (See pics) Connections were added to the back panel for the accessories, but they were not included when we purchased this item, so we were unable to test this additional computer and disconnected it during restoration, though we left it in place in case a future owner has access to accessories and wants to try to get it running (no guarantees about that though since we didn't test it). The ports on the back have not been tested as we don't have anything that hooks up to them.

There are currently a few patches that are silent, and the first one is low volume and voices change octaves in a seemingly random fashion. We suspect these patches just need to be reprogrammed. At some point, we hope to find time to download and learn the modern editing software mentioned above so we can reprogram these patches, but time is limited, so we may just leave this up to the next owner who we assume will want to load in their own patches. The patches currently in memory are a mix of organ, piano and what seem to be orchestral type sounds."

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