Sunday, June 15, 2025
new, a sponge based audio oscillator
video upload by RS-Elc
"Sponge material shows an extremely large dielectric constant that changes with the amount of compression. It can be made into a wide range variable capacitor when clamped between two metal plates. Capacitors in the range of 100nF can be made with only a few cm of (cellulose based) sponge material.
This movie shows a sponge-based oscillator and a sponge-based lowpass filter as an introduction into 'Spongetronics'. Comes with oscilloscope waveforms and resulting sounds. More info on Elektor Labs."
Synthetic Sound Labs - Geo-Grüvn and Lowpass Gate
video upload by NOISEBUG
"Two new releases from Synthetic Sound Labs that happen to play very well together. The SSL-1015 Lowpass Gate and, the Model 1655 - Geo-GrüVN
Add some Euclidean variation and snappy west coast percussive melodies to your 5U/MU systems. Head to noisebug for more info
#umodular #synth #modularsynth #synthesizer
https://www.noisebug.net/collections/..."
TRIX - 4 Channel Polyrhythmic Trigger Sequencer for Eurorack Synthesizer
video upload by NoisyFruitsLab
"Trix is a 4 channel, 32 steps trigger sequencer with individual step length, probability, swing, one knob filling methods per channel and 16 banks for saving patterns.
An excellent partner for polyrhythmic and swinging beats.
Knob controlling beat creation with different modes for filling / unfilling patterns.
Each channel has an individual pattern length from 1- 32 steps with visual feedback on the display, changing dynamically between 16 and 32 steps.
Probability per channel in percentage provides random triggering and brings static patterns generativly alive. Shuffle / swing per channel makes it groove as hell!
Individual filling methods per channel to adjust how your knobs create or interact with patterns. Choose between standard, euclidean and random.
Encoder for adjusting the tempo in BPM, dialing through patterns and start / stop.
LED buttons for direct triggering, adding or deleting steps and for indication of triggers. Packed with additional functions using the shift button.
Flexible clock input to capture all common clock resolutions.
Clock and reset output.
RGB color changes per pattern, to change the mood of your sequencer.
Specs
14HP
Depth: 28mm
+12V 100mA
Output 5V
MCU RP2040
noisyfruitslab.com"
Roland JX-10 Custom Ambient Sounds (read description)
video upload by LFOstore
"We explored the older brother of whole JX
series - mighty JX-10!
It's like 2 JX-8P's in one keyboard.
As you may know this model is kinda unfinished and originally having no sysex or midi implementation.
If battery will die you will lost all your sounds and the only way to restore them - is to buy original or retro cartridge.
here: https://www.ebay.com/itm/335389922310
If you having such a cartridge you can easily
save soundsets on the synth and on the computer.
Even without Vecoven upgrade.
While we are waiting the cartridge replica, this video showing that we already started to make our, soundset.
Enjoy!"
Startone MK400 review: $170 beginner's keyboard with HIDDEN features
video upload by Floyd Steinberg
"The Startone MK400 (aka Medeli MK401) is a 61 keys 64 voice 16 part multitimbral keyboard with long feature list, including a sampler. It can record MIDI and audio directly to SD card and send audio over USB to your DAW. It also has some undocumented but powerful features that I briefly show in this video. My review of the MK300 still is one of my most popular videos with over 100.000 views - the MK300 is a go-to keyboard for kids who want / are encouraged by their parents to learn the piano because of its note stand, a good sounding piano patch and a sustain pedal plug. The MK400 is built on the same ideas, but adds a lot of functionality, upping the price to $170, which still is an incredible bargain.
Table of Contents:
00:00 introduction
00:57 unboxing, hardware overview
03:19 how does the piano sound?
04:26 sample yourself
05:01 stay in touch
05:59 keyboard splits
06:30 layering
06:47 Twinova (four handed mode)
07:12 harmony (one finger chords)
07:30 arranger functions: songs, styles and mixes
08:15 muting / unmuting tracks (and sidechaining)
08:52 midi and audio recording to sd card
09:01 daw integration: midi and audio over usb
10:25 playing a vst plugin synth (air opx4)
10:52 undocumented features: it can synth
12:29 conclusion
14:23 my demo track
15:06 bye
HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"
Kawaii K5000 SN 598886 w/ Original Box
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
via this Reverb listing
Akai S6000 MIDI Stereo Digital Sampler SN 19915-00603 w/ Original Box
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"Akai's flagship model at the time.Fully equipped with expansion boards for all slots, including optional CF card reader, ADAT board, USB board, effects board, polyphonic expansion board, and memory expansion. Comes in a valuable original box.This is an optional item that is difficult to find today.Brackets included for mounting in a 19" rack.Parameter operation and data transfer/management from PC via USB. Waveform editing is also possible, and can be used as a digital MTR by taking advantage of the abundant inputs and outputs.The controller screen has some color blurring, but the contrast setting can be changed.Because of its multifunctionality, we have not been able to check all of the functions, but we have performed a basic operation check and found that it works without any problems.There is no floppy disk, so we cannot check the disk operation, but when a disk is selected on the screen, a sound is heard and it responds."
via this Reverb listing
"Akai's flagship model at the time.Fully equipped with expansion boards for all slots, including optional CF card reader, ADAT board, USB board, effects board, polyphonic expansion board, and memory expansion. Comes in a valuable original box.This is an optional item that is difficult to find today.Brackets included for mounting in a 19" rack.Parameter operation and data transfer/management from PC via USB. Waveform editing is also possible, and can be used as a digital MTR by taking advantage of the abundant inputs and outputs.The controller screen has some color blurring, but the contrast setting can be changed.Because of its multifunctionality, we have not been able to check all of the functions, but we have performed a basic operation check and found that it works without any problems.There is no floppy disk, so we cannot check the disk operation, but when a disk is selected on the screen, a sound is heard and it responds."
Vintage EDP Gnat Special SN 0082
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"This synth is very rare indeed. There were only about 100 made circa 1980/81. This one is serial number 0082, made of solid mahogany beautiful wood."
via this Reverb listing
"This synth is very rare indeed. There were only about 100 made circa 1980/81. This one is serial number 0082, made of solid mahogany beautiful wood."
Akai AX80 Polyphonic Analog Synthesizer + Tauntek Firmware
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"Fully working unit, fat analog sound. Strings, pads, basses sound oh so good. Look at those electric blue cash register displays. Has been upgraded with Tauntek firmware for sysex patch backup/retrieval. And many other wonderful added features. Has new battery for long term patch memory retention."
via this Reverb listing
"Fully working unit, fat analog sound. Strings, pads, basses sound oh so good. Look at those electric blue cash register displays. Has been upgraded with Tauntek firmware for sysex patch backup/retrieval. And many other wonderful added features. Has new battery for long term patch memory retention."
Roland JP-8080 Virtual Analog Synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this Reverb listing
"This is a Roland JP-8080 rackmount synthesizer module in excellent condition – a modern classic known for its powerful Supersaw waveform, lush pads, biting leads, and iconic formant filters. The JP-8080 was the rack version of the JP-8000 keyboard and became a staple of trance, house, and electronic production in the late ‘90s and early 2000s."
via this Reverb listing
"This is a Roland JP-8080 rackmount synthesizer module in excellent condition – a modern classic known for its powerful Supersaw waveform, lush pads, biting leads, and iconic formant filters. The JP-8080 was the rack version of the JP-8000 keyboard and became a staple of trance, house, and electronic production in the late ‘90s and early 2000s."
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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