Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"Programmable analog drum machine from East Germany, often tagged as the "east block TR-808". I think it deserves better than this comparision, since it's a very nice sounding drum machine on its own, with many features for the time (MIDI IN and OUT - sync and trigger, stereo output, optional trigger inputs and individual outputs etc)
Unit was serviced, calibrated and is in fully working order. It has the latest firmware which fix the MIDI timing issue earlier units had.
If you don't know these units check the demo I made with another unit [in the listing and previously posted here], I serviced several of those units through the years.
Cosmetic is in excellent condition with only very little wear and scuff."
Wednesday, July 30, 2025
Rhodes Chroma 64-Key 16-Voice Polyphonic Analog Synthesizer w/ CC+ Upgrade & Docs SN 21030660
Note: Auction links are affiliate links for which the site may be compensated.
video upload by Bruce Sklar
"This is a short video of my 1984 Rhodes Chroma. I am the original owner.
This shows me creating a scratch patch using the CC+ Split 39 function , which shows the instrument functioning as it should"
via this Reverb listing
"It is registered on the Chroma Website 0660
Is it fully functional , has the CC+ and midi interface , and a new power supply installed by the best Chroma tech on the east coast.
It is cosmetically beautiful. The black metal top shows a few scratches from having a Rhodes Chroma Polaris on it years ago, hence the 'excellent' vs ' mint ' condition
It has a new flight case to original specs, all original manuals , all needed pedals , although those are not original"
video upload by Bruce Sklar
"This is a short video of my 1984 Rhodes Chroma. I am the original owner.
This shows me creating a scratch patch using the CC+ Split 39 function , which shows the instrument functioning as it should"
via this Reverb listing

Is it fully functional , has the CC+ and midi interface , and a new power supply installed by the best Chroma tech on the east coast.
It is cosmetically beautiful. The black metal top shows a few scratches from having a Rhodes Chroma Polaris on it years ago, hence the 'excellent' vs ' mint ' condition
It has a new flight case to original specs, all original manuals , all needed pedals , although those are not original"
Moog Minimoog Voyager Aluminum Edition SN 74 w/ Wheeled Road Case
Note: Auction links are affiliate links for which the site may be compensated.
via this eBay listing
"Ultra-rare Moog Minimoog Voyager Aluminum Edition, serial number #74 of only 100 ever made. This limited edition features a beautifully machined solid aluminum chassis, making it one of the most striking and collectible synths Moog has ever produced.
This unit shows some wear and tear from use—minor surface marks and scuffs—but it has been recently serviced and professionally calibrated and is fully functional. It sounds as amazing as you’d expect from a Moog Voyager.
Includes a heavy-duty hard case on wheels, perfect for protection and easy transport.
Key Details:
Limited Edition Aluminum Voyager – #74 of 100
Fully functional, recently serviced and calibrated
Classic analog sound with Moog’s legendary filters
Comes with a wheeled hard case"
via this eBay listing

This unit shows some wear and tear from use—minor surface marks and scuffs—but it has been recently serviced and professionally calibrated and is fully functional. It sounds as amazing as you’d expect from a Moog Voyager.
Includes a heavy-duty hard case on wheels, perfect for protection and easy transport.
Key Details:
Limited Edition Aluminum Voyager – #74 of 100
Fully functional, recently serviced and calibrated
Classic analog sound with Moog’s legendary filters
Comes with a wheeled hard case"
Moog Messenger Sound Demo with Custom Presets
video upload by Bonedo Synthesizers
"In this video, we introduce the Moog Messenger – Moog’s modern synth with a classic soul. It combines the legendary Moog sound with powerful modulation and filter options, all while keeping the interface refreshingly simple."
Minimal Ambient Music with TENORI-ON | Fragmented Star 2025-07-30 by atnr
video upload by atnr
"A piece for YAMAHA TENORI-ON, wavestick, and @NordKeyboards Nord Lead. Minimal phrases scattered by delay blend with synth textures into a minimal ambient soundscape.
On the TENORI-ON, I switch blocks to morph the phrase. It’s routed through @ChaseBlissAudio MOOD MK II for delay, pitch-shifting, and occasional micro-loops.
The wavestick is pitch-controlled by using the @KORG_INC SQ-1 in STEP JUMP mode as a CV keyboard. Its output runs into @strymon NIGHTSKY for reverb and delay.
The Nord Lead plays the harmony, with delay from @gfisys Specular Tempus."
Behringer MS-1 Firmware Update and Chat
video upload by ranzee
"Video contents:
00:00 Show starts
01:00 Behringer MS-1 info
03:00 Firmware update
10:00 Live Chat
More information about this episode (including links to news items, videos and images) can be found on the blog post here: https://ranzee.com
My channel is about synthesizers, music technology, electronica and geekery. I regularly show new gear, setup guides, live jams, original music, repairs & builds, music technology reviews, tutorials, retro gaming & computing!"
Behringer HALOS – From Silence to Substance
video upload by Behringer
"Ready to explore a new kind of resonance?
HALOS is a physical modeling synthesizer by Behringer, designed to bring strings, membranes, and tubes to life — right inside your Eurorack.
🎧 From deep organic tones to shimmering, evolving harmonics, HALOS turns any trigger, envelope, or noise source into rich, expressive soundscapes.
🚀 Why HALOS?
• Inspired by Mutable Instruments RINGS*
• Three resonator modes: Modal, Sympathetic Strings, Non-linear/Dispersion
• Advanced physical modeling algorithms for strings, membranes, and tubes
• Pseudo-polyphony up to 4 notes
• High-resolution CV control with 16-bit accuracy
• Compact 14 HP format — ideal for modular rigs
✨ Perfect for experimental artists, Eurorack enthusiasts, and sound designers looking to add realism and depth to their modular system.
🎬 Watch the video. Redefine your resonance.
🎶 HALOS is here — and it’s alive."
HALOS - The Incredible Hidden Modes (Part 2)
video upload by Behringer
Tuesday, July 29, 2025
Why To Love The Prophet 5 / 10
video upload by Devin Belanger
"Get the Miles Away Custom Patches for Prophet 5 & 10: https://shop.milesawayofficial.com
Stream my new song 'F*** It, I'm Alright' with SABAI: https://links.milesawayofficial.com
Is the Sequential Prophet 5/10 the greatest synth ever made? The vintage Prophet 5 and the modern reissue Prophet 10 are famous synths that shaped synthesizers in music —but are they still worth it today? Review, deep dive, walkthrough, tips and tricks and more.
0:00 - intro, what makes the Prophet 5 special
1:06 - original demo song
2:40 - one huge caveat about the Prophet
3:45 - demo jam with reverb and chorus FX
4:52 - using the Prophet 10 on my original music
5:55 - vintage jam, dry with no FX
6:58 - the argument for why the Prophet is the GOAT
7:38 - ambient jam with Nightverb
9:21 - panel walkthrough, oscillators
11:50 - my favourite tip for the waveforms
12:57 - the famous polymod section
14:06 - analog fm sound design
15:43 - vintage knob & my biggest complaint
17:13 - why polymod is so versatile and great & LFO mode
19:04 - saving a happy accident patch we discovered
20:05 - what makes the LFO special
22:09 - the best tip for making lofi patches
25:01 - comparing the difference btween the filters
27:06 - resonance bass compensation feature
27:42 - the philosophy of no menu diving
29:16 - poly unison mode
30:37 - pros and cons, is it worth the price?"
Moog Moog - Model IIIP & Moog - 953 Duophonic Keyboard w/ Original Boxes
via Noisebug

'MOOG MODEL IIIP Serial Number 5 of 40
MOOG KEYBOARD 953 BLACK
Includes all necessary connectors and a bundle of S-Trig Cables
Every module has been tested and thoroughly inspected. The System and keyboard are in excellent condition, no issues were detected.
WEIGHT AND DIMS
1) 25H X 18W X 9.5D - 41lbs unboxed / 47lbs boxed
2) 25H X 18W X 9.5D - 40lbs unboxed /45lbs boxed
3) 25H X 18W X 9.5D - 43.5lbs unboxed / 49lbs boxed"
Moog - Model 15 #80 of 150 w/ Original Box & Manual
via Noisebug
"MOOG MODEL 15 Serial Number 80 of 150: $12,500.00
Excellent condition. Each module has been thoroughly inspected. This unit comes with it's original box, signed serial number verification, hardcover user manual"
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH