MATRIXSYNTH

Friday, November 07, 2025

Rhodes Chroma SN 21010234 - beautiful but not working

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


via this Vemia listing

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

Pics of the inside below.

"Rhodes - Chroma (s/n 21010234) - In very good physical condition, but does not work as system locks up at boot up. The power supply was replaced previously, so the troublesome Rhodes power supply was replaced prior to the current problem.. Comes with 2 original Chroma footswitches and the Chroma dual pedal unit. 240V (although switch mode power supply – so should be all OK with 110V)"

See the excellent https://www.rhodeschroma.com for resources.

Moog Model 1125 Sample-Hold SN 2839

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


via this Vemia listing

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

"Moog - 1125 Sample - Hold (s/n 12839). In extremely good physical condition, though untested as don’t have access to a Minimoog to test it. Also will work with Micromoog, Multimoog, Polymoog and Sonic 6."

Maplin 5600S weird, wonderful, as seen

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


via this Vemia listing

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

Oberheim DS2A early sequencer - not working

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


via this Vemia listing

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

"Oberheim – Digital Sequencer DS2A (s/n 289) - Early 1970’s analogue sequencer (under digital control). This is the DS2”A” version with 144 note memory. In very good physical condition, but does not work. Powers up with a couple of segments on the screen lighting up, switches are working. 240v version. VEMIA can collect and pack: 9GBP."

GS Music e7 Analog Polyphonic Synthesizer Multi Timbre Mode


video upload by James Dyson

https://www.gsmusic.com

MFB Dominion SED // Volca Kick // ACID JAM // NO TALKING


video upload by LESINDES

"MFB Dominion SED // Volca Kick // ACID JAM
Recording from the RARE mono synth MFB DOMINION SED.
ARCHIVE FOOTAGE from 2016"

Make Noise PoliMATHS Overview (feat. Sarah Belle Reid)


video upload by Perfect Circuit and Sarah Belle Reid

"Make Noise PoliMATHS is a revolutionary new Eurorack module — an eight-channel function generator designed to create complex, evolving arrays of control voltages.

While it was designed to work as part of Make Noise's new NUSS ecosystem, it also brings a lot of possibilities to a non-NUSS Eurorack system. To help explain how it can play along with the rest of your modular synth, we reached out to our friend ‪@sarahbellereid‬ to see how she has been using it.

She covers the module's basic features, and then discusses a few interesting ways to approach it:
1:38 Module Overview
14:08 PoliMATHS as a Multi-CV Tool
17:00 PoliMATHS as a Polyphonic Synth
23:15 Double Gating with PoliMATHS
26:02 PoliMATHS as a Clock Divider

Learn modular synthesis with Sarah Belle Reid: https://www.soundandsynthesis.com/
Buy a PoliMATHS of your own: https://bit.ly/4otM5kX
Learn more about PoliMATHS on Perfect Circuit's blog, Signal: https://bit.ly/4qEcjm5

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Perfect Circuit is an independent electronic instrument shop with an online store at https://www.perfectcircuit.com/ and a Burbank, California showroom at 2405 Empire Ave. We're open seven days a week, 12-8 PM, and our entire inventory is available to try out in person. Get your hands on the most excellent analog and digital synthesizers, effect pedals, Eurorack modular synths, drum machines, recording gear, and more!

Learn about electronic music, techniques, and gear on our blog, Signal: https://www.perfectcircuit.com/signal"

RYK TimeSlice Quad Looper and sampling laboratory - sound demos and technique tutorials


video upload by RYK Modular

"CHAPTERS:

0:00 – Time Slice !

0:08 – Drum loop and synth with FX
Track3: Drum loop with Delay FX, and Pitch Shifting. End Of Loop Pulse sent from drum loop to pulse an envelope in ENVY Machine. The envelope is patched to amplitude mod on ALGO.
ALGO output is patched into Track 2, with Delay and Pitch Shift effects applied

01:07 – Ambient Piano treatment
Track 1 Jazz piano loop. Tracks 2,3, & 4 are resampling from Track 1, and are set to Live Loop mode. Each track has random trigger from ENVY Machine, for resampling input from paino loop on Track 1.

01:58 – Live Keyboard loop recording, with drum loop and granular scanning trumpet solo !
Track 1: Using DAW loop style to record VECTOR WAVE keyboard sounds, then Track 2: using RETRO loop style to record bass line also from VECTOR WAVE.
Drum break loaded from internal storage, Decimate FX applied.
Flute sample sliced, slowed down, Wave Folded, and sliced-scanning modulated by knob recording on ENVY Machine.

FLUX Breakout Box (SOMA Labs demo)


video upload by SOMA Laboratory



via SOMA Labs

The Breakout Box is a portable standalone module that operates in two modes:

With FLUX — enables using FLUX as a controller for external hardware via CV or MIDI/MPE.

As a MIDI-to-CV converter — compatible with any DAW or sequencer that supports MIDI CC messages.

In both modes, the Breakout Box is connected to a host device and powered via USB-C.

The Breakout Box is housed in a compact metal enclosure with dimensions 140×45×34 mm.

The front panel and internal construction are designed to allow mounting as a 6HP Eurorack module.

When installed in a Eurorack system, it does not require an internal power supply and is powered through the USB port.

When used with FLUX, the Breakout Box provides access to all key FLUX parameters as CV and MIDI outputs, including:

Pitch and velocity (monophonic and duophonic modes),

6 bipolar CV outputs from the timbral keyboard (interpreted either as independent sensors or as 3D XYZ data),

Tilt CV output.

When used as a MIDI-to-CV converter, it supports control via standard MIDI or MPE, and CC messages.

CV outputs can be mapped according to user-defined settings, which can be configured via a PC and stored in the Breakout Box’s non-volatile memory."

Akai CUT Roger Linn?! The Wild MPC60 Story + Prodigy Sampling Breakdown


video upload by Nostalgic Explorer

"The Akai MPC60 by Roger Linn is the machine that reshaped hip-hop, electronic, trip-hop, and rave culture. Today, I'm diving into why this legendary sampler still inspires producers, and then I jump into a hands-on sampling session inspired by The Prodigy — 'Smack My B%tch Up' from The Fat of the Land era.

I’ll explore its story — from design breakthroughs and 12-bit grit, to the Akai drama that cut Roger Linn out of his own creation — and then I’ll show you how to sample, trim, assign pads, sequence, and jam directly on the MPC60.

What you’ll learn:
• Why the MPC60 became a classic
• How early electronic pioneers used it
• Sampling on the MPC60 step-by-step (The Basics)
• Assigning pads, bars & sequencing
• Playing & jamming the samples on the MPC

I’ll show you a simple way to start sampling and building beats on the MPC60 using The Prodigy’s iconic track as inspiration, no plugins, no DAW, just the machine."

00:00 — Intro: Why the Akai MPC60 changed music forever
00:35 — MPC60 history: specs, limitations & the Roger Linn drama
02:33 — Why producers still love the MPC60 (Dilla, Shadow, Prodigy & more)
03:28 — Sampling The Prodigy “Smack My B%tch Up” on the MPC60
05:56 — How to sample a song on the MPC60 (step-by-step)
06:15 — How to assign a sequence on the MPC60
06:41 — How to set the number of bars on the MPC60
07:00 — How to record a new sample on the MPC60
07:20 — How to set sample length (seconds) on the MPC60
07:56 — How to check recording levels (REC METER) on MPC60
08:44 — How to name and save a sample on the MPC60
09:26 — How to edit and trim a sample on the MPC60
10:19 — How to assign a sample to pads on the MPC60
10:47 — Poly vs Mono: stop samples from overlapping on the MPC60
12:28 — Playing and testing samples on the MPC60
13:10 — MPC60 live jam: “Smack My B%tch Up” Prodigy-style
15:03 — Outro & final thoughts of the MPC60
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