MATRIXSYNTH


Saturday, May 17, 2025

Roland JX-3P SN 357679 w/ KIWI 3-P Mod & Retroaktiv PG-2K Programmer

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via this Reverb listing

Additional SYNTH CITY Listings

"Roland JX-3P maxed out with the KIWI 3-P mod and the very intuitive Retroaktiv PG-2K controller programmer, taking this JX3P to new territory! This synth has been fully serviced and is ready for studio or stage.

Missing the knob cap for the brilliance control and has a mismatched knob on the master volume control. Includes programmer connecting cable."

Roland Juno-106 61-Key Programmable Polyphonic Synthesizer w/ Hardcase (Serviced) SN 394154

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


via this Reverb listing

"1983 Roland Juno 106 in fully working condition with new voice chips installed. Includes hard case as pictured."

Additional SYNTH CITY Listings

Korg Delta Strings Synthesizer SN 286497 w/ Original Box

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


via this Reverb listing

The Order The Order

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


via this Reverb listing

Akai S612 MIDI Digital Sampler + MD280 disk unit + 6 disks + rare 1.3 firmware

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


via this Reverb listing

"The first sampler from AKAI - 1985

4khz to 22khz frequency sampling (1 sec. to 8 sec.)

6 voices polyphony

Analog lowpass filter

In good cosmetic condition, with many light traces of rust on the cover, but all other parts are free form rust or humidity traces. Inside is perfectly clean.

Everything works perfect.

This unit have the rare custom Firmware 1.3 from Florian Anwander allowing multi slices, velocity to filter and amp + more.

Some of these features need to be loaded from disk at start, but this disk is missing.

However, the velocity functions are available

The sampler have also been modified with 6 individual outputs. It allows to output each slice to individual output, but also to pan each of the 6 voices individually.

The MD280 disk unit have a new belt and head cleaned

It comes with 6 rare QDD 2.8 inch sample disks, including original AKAI library disks.

Works on 220-240 AC"

DIY eurorack modular synth | MOD2 FM Drum : RP2350 based drum module


video upload by HAGIWO

"This module is an open source general-purpose Drum module based on Seeed XIAO RP2350.
Thanks to AI-friendly hardware design, it's easy to create software variations using generative AI.
With general-purpose components and a simple circuit, this module is affordable and DIY-friendly.

FM Drum:
Two‑operator FM percussion voice for Eurorack.

working documents
https://note.com/solder_state/n/nce8f...
https://note.com/solder_state/n/n5ff2...

PCB gerber data & PCB assy production data Download
https://www.patreon.com/posts/mod2-rp...

FM Synthesis - A Practical Guide - Part 3 - How operator stacks work, the truth about modulation


video upload by ChrisLody

Additional posts

"If you'd like to support the channel you can grab a 'Pay What You Want' album from my Bandcamp or an instrument, kit or badge from my Etsy.
https://chrislody.bandcamp.com
https://www.etsy.com/uk/shop/SymetriC..."

Wait... JV-1080 has Full Songs on it?


video upload by Ricky Tinez

"Today we're going to make some house music that's so cheesy it's amazing haha! And to do this we'll bring out a classic house music sound source, the JV-1080 by Roland!"

00:00 How did Roland get away with this?!
00:55 The Greatest Bass of All Time
01:41 My favorite Ride trick
03:10 Accidental Vocal Sample haha!
04:44 Why does it have to do this?!
06:03 Quick Fix for a bass line!
07:25 We need them strings!
08:23 Laust In The Sauce

Nonlinear Labs C15 - quick Karplus-Strong sound design


video upload by Collector Current

"A quick exploration of Karplus-Strong synthesis on the Nonlinear C15.

Soundcloud: / collector-current
Bandcamp: https://collectorcurrent.bandcamp.com"

Zen Synth? Thinking through the Kodamo Mask1


video upload by j bowman

"Is the Kodamo Mask1 the most Zen-like synthesizer on the market today? In this video, we take a deep dive into the bitmask-based sound engine of the Mask1 and explore its groundbreaking approach to sound design on synths. Whether you're a seasoned synth head or just discovering the unique potential of the Kodamo Mask1, this video walks you through the philosophy, workflow, and sonic capabilities that make this synth stand out.

🧠 We'll unpack what makes the Mask1’s bitmask synthesis architecture different from traditional subtractive and FM synthesis, and why this could change how you approach creative sound design synth work. From clean digital textures to gritty harmonic layering, the Mask1 offers a truly original toolkit for crafting viral-worthy sounds.

Perfect for synth enthusiasts, sound designers, and anyone hunting for deep-dives into rare or underrated instruments. This isn’t just a review—it’s a journey through a meditative and highly programmable machine built for sonic sculpting.

🔍 Keywords: Kodamo Mask1, bitmask, sound design synth, sound design on synthesisers, viral synths, unique synth engines, experimental sound design, Zen synthesizer, synthesizer review, digital synth exploration."
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