SCI Sequential Multitrak - Midi CC Firmware upgrade
Published on Mar 10, 2014 LeonDigz·19 videos
Update: two additional notes:
- CC's also work when the unit is in the "Stack"/Split mode, as well as when it is in midi mode 4 (multitimbral).
- MIDI CC receive only.
This is pretty incredible news. The SCI Multi-Trak offered a velocity sensitive keyboard which the Six-Trak lacked, however the Six-Trak supported MIDI CC which allowed you to use external controllers to edit its parameters. The Multi-Trak lacked CC so you could only edit it directly. This upgrade will finally bring MIDI CC support to the Multi-Trak and the CCs will match the Six-Trak with the addition of a few extra parameters only found on the Multi-Trak. If you have both synths and/or a TaunTek upgraded Max, you should be able to edit them at the same time which should be interesting for layering and editing patches. You'll also be able to do some decent A/B tests between the synths set to the same parameters.
Video Description and link to more details:
"I've been working with Bob Grieb to beta test & provide feedback on a firmware upgrade for the SCI multitrack. The Upgrade accomplishes the following;
-Midi CC parameter control for all parameter matching the Six-Trak & Max.
-Midi CC control has been code optimized for better performance.
-Additional 4 midi cc parameters LFO, VCA & VCF velocity sensitivity amount + a special request to unlock the multiplier on the VCO envelope.
-VCO envelope now has a multiplier via cc#43 to achieve 1x, 2x, 4x, 8x & 16x original depth allowing for more diverse percussive (synth drum) & sfx type patches.
-Two sets of factory patches are now embedded in ROM and can be loaded holding down a button on power up.
More information can be found at;
http://www.tauntek.com/SCIMultitrak.htm
This project was built upon development of a SCI Max upgrade Bob Grieb and I also worked on which gives this oft looked over lil' brother of the Multitrak & Sixtrak a new lease on life. http://www.tauntek.com/SCIMax.htm
Thanks + Congrats to Mr. Grieb for making a fantasy reality for many Multitrak owners.
p9
*P.S mind you ears/speakers, this synth noodling uses a lot of the cross-mod feature of the CEM3394."
Showing posts sorted by relevance for query Bob Grieb. Sort by date Show all posts
Showing posts sorted by relevance for query Bob Grieb. Sort by date Show all posts
Tuesday, March 11, 2014
Friday, April 29, 2022
Siel: Firmware 10+CC and Editors max for live Logic Reaktor BCR2000 for Opera6 Kiwi DK600 Expander
video upload by
"neue Möglichkeiten für Siel Opera6, Kiwi, DK600 und Expander:
danke der neuen Firmware10+CC von Bob Grieb, www.Tauntek.com
und neuen Editoren für Max for Live von Clemens Bergthaller, Atlantik; Logic Audio, Reaktor und einem Patch für die Behringer BCR2000 sind dies Synthis über midi automatisierbar, Sounds lassen sich über Midi speichern u laden. Das Video zeigt die neuen Features, viel Spaß"
Googlish:
"new possibilities for Siel Opera6, Kiwi, DK600 and Expander:
thanks to the new Firmware10+CC from Bob Grieb, www.Tauntek.com
and new editors for Max for Live by Clemens Bergthaller, Atlantik; Logic Audio, Reaktor and a patch for the Behringer BCR2000, these synths can be automated via midi, sounds can be saved and loaded via midi. The video shows the new features, have fun"
Tuesday, January 03, 2017
Sequential Circuits Sixtrak OS V14 - LFO Sync &
Published on Jul 1, 2016 umusic6
"This video demonstrates the new feature of
LFO Sync to note trigger in the v14 Firmware created by Bob Grieb. The binary image of the firmware is available on his site http://tauntek.com/SixTrackBug.htm
The LFO Sync can be set by a new parameter (#37) with values 0 for sync off and 1 or 2 (inverse) for sync on.
The controller in used in the video is the Six-Tweak available at stereoping.com"
Sequential Circuits Sixtrak OS V14 - Unison Detune
Published on Jul 1, 2016 umusic6
"This video demonstrates the new feature of Unison Detune in the v14 Firmware created by Bob Grieb."
Thursday, August 22, 2013
New Firmware Available for Sequential Max Users
This one in via Plutoniq9:
"*I'm reposting this from the sequential yahoogroup for AH'ers. It was a fascinating project to work with Bob on. He truly is a master of the art! What i think is fantastic is that this project has taken a very "crippled" SCI instrument with limited use and turned it into a synth that has mass potential now. It has been a long process and I applaud Bob for taking the initiative and devoting a lot of his free time to make this possible. Without his efforts this would have probably never been realized.;
In addition to what is listed below, we were able to identify and fix a major bug in the Max having to do with enabling velocity and simultaneous midi cc control.
Also, I have performed this mod alongside Bob (there were a few revision), and I can vouch that it is flawlessly implemented and feels like a whole new instrument to work with.
---------------------------------------------------------------------------------------------------------------------
Attn Sequential Max owners: With ideas and encouragement from Ryan Palmer
>(AKA Plutoniq9), I have developed a new version of
the Max firmware which has the following features:
1) 100 downloadable programs (Max had 20 that could be downloaded)
2) Storage for ~3200 notes in two songs (Max could store about 500)
3) Unison mode (Max did not support Unison mode)
4) Battery-backed storage of downloadable programs and songs
5) MIDI chan and a few other parameters are also non-volatile
6) Three sets of programs in EPROM, loadable on request:
a) Max orig 80 programs plus Six Trak Unison programs
b) Six Trak orig 100 programs
c) Multitrak orig 100 programs, without chorus and velocity sens parameters
7) Current voice parameters, including any CC changes, can be stored in program
#99
8) Program #99 can be copied to any other program.
[One quick follow up.
7) & 8) listed below addresses the Max's limited patch creation abilities. Now, using any standard midi cc controller you can create & save onboard any patches you create without the use of a computer. Prior, patch creation could be done only by a sysex sound dump TO the max (which of course would be lost once you switched off the unit). The max always had cc parameter support, however any changes to the current patch made via CC's would not be reflected when you sent a sysex sound dump to the Midi out. Shitty huh?]
9) MIDI receive buffer increased from 64 bytes to 128 bytes
[doubles the midi receive buffer from 64-bytes to 128-bytes. It doesn't sound like much, but it enables a ton more simultaneous cc control messages to be sent to the max without choking it up. Previously, more than four cc messages sent to the max while sending midi note data would lock up the voices. Also with unison now able to be enabled, that number dropped down to one! With the larger midi buffer, I haven't yet been able to lock it up in either poly or unison mode (I tried 5-6 simultaneous cc's in unison with no problem).]
To support these features, the memory chips in the Max need to be upgraded.
This requires good soldering skills. Chips need to be removed from the board, a
few traces must be cut, and a few wires need to be added.
The following parts are needed:
27C256 (new code EPROM, Flash memory chip can also be used)
32Kx8 NVRAM DS1230Y-150+ (installed in place of U12)
24-pin machined pin IC socket for NVRAM
28-pin IC socket for EPROM
Two BAT48 Schottky diodes
1K 1/4W resistor
>
>If anyone is interested in trying this mod in their Max,
>please contact me and I will provide more information and instructions. If
there is enough interest, I can make a small PC bd which will simplify the mod,
but add about $10 to the cost.
>
>I am not selling anything, except possibly the pc boards, but will help anyone
who is interested and has the necessary skills to perform the mod.
>
>Bob Grieb
>"
Update: additional details in this post.
"*I'm reposting this from the sequential yahoogroup for AH'ers. It was a fascinating project to work with Bob on. He truly is a master of the art! What i think is fantastic is that this project has taken a very "crippled" SCI instrument with limited use and turned it into a synth that has mass potential now. It has been a long process and I applaud Bob for taking the initiative and devoting a lot of his free time to make this possible. Without his efforts this would have probably never been realized.;
In addition to what is listed below, we were able to identify and fix a major bug in the Max having to do with enabling velocity and simultaneous midi cc control.
Also, I have performed this mod alongside Bob (there were a few revision), and I can vouch that it is flawlessly implemented and feels like a whole new instrument to work with.
---------------------------------------------------------------------------------------------------------------------
Attn Sequential Max owners: With ideas and encouragement from Ryan Palmer
>(AKA Plutoniq9), I have developed a new version of
the Max firmware which has the following features:
1) 100 downloadable programs (Max had 20 that could be downloaded)
2) Storage for ~3200 notes in two songs (Max could store about 500)
3) Unison mode (Max did not support Unison mode)
4) Battery-backed storage of downloadable programs and songs
5) MIDI chan and a few other parameters are also non-volatile
6) Three sets of programs in EPROM, loadable on request:
a) Max orig 80 programs plus Six Trak Unison programs
b) Six Trak orig 100 programs
c) Multitrak orig 100 programs, without chorus and velocity sens parameters
7) Current voice parameters, including any CC changes, can be stored in program
#99
8) Program #99 can be copied to any other program.
[One quick follow up.
7) & 8) listed below addresses the Max's limited patch creation abilities. Now, using any standard midi cc controller you can create & save onboard any patches you create without the use of a computer. Prior, patch creation could be done only by a sysex sound dump TO the max (which of course would be lost once you switched off the unit). The max always had cc parameter support, however any changes to the current patch made via CC's would not be reflected when you sent a sysex sound dump to the Midi out. Shitty huh?]
9) MIDI receive buffer increased from 64 bytes to 128 bytes
[doubles the midi receive buffer from 64-bytes to 128-bytes. It doesn't sound like much, but it enables a ton more simultaneous cc control messages to be sent to the max without choking it up. Previously, more than four cc messages sent to the max while sending midi note data would lock up the voices. Also with unison now able to be enabled, that number dropped down to one! With the larger midi buffer, I haven't yet been able to lock it up in either poly or unison mode (I tried 5-6 simultaneous cc's in unison with no problem).]
To support these features, the memory chips in the Max need to be upgraded.
This requires good soldering skills. Chips need to be removed from the board, a
few traces must be cut, and a few wires need to be added.
The following parts are needed:
27C256 (new code EPROM, Flash memory chip can also be used)
32Kx8 NVRAM DS1230Y-150+ (installed in place of U12)
24-pin machined pin IC socket for NVRAM
28-pin IC socket for EPROM
Two BAT48 Schottky diodes
1K 1/4W resistor
>
>If anyone is interested in trying this mod in their Max,
>please contact me and I will provide more information and instructions. If
there is enough interest, I can make a small PC bd which will simplify the mod,
but add about $10 to the cost.
>
>I am not selling anything, except possibly the pc boards, but will help anyone
who is interested and has the necessary skills to perform the mod.
>
>Bob Grieb
>"
Update: additional details in this post.
Monday, September 09, 2013
Sequential Circuits Max Firmware Upgrade Boards
Follow-up to this post.
via Plutoniq9:
"For anyone interested, bob Grieb has moved ahead with designing and implementing a PCB add-on board or the Max firmware upgrade. This should simplify the modification greatly. Anyone interested should contact bob directly." You'll find full details on the TaunTek site here. The contact link is on the bottom left.
via Plutoniq9:
"For anyone interested, bob Grieb has moved ahead with designing and implementing a PCB add-on board or the Max firmware upgrade. This should simplify the modification greatly. Anyone interested should contact bob directly." You'll find full details on the TaunTek site here. The contact link is on the bottom left.
Saturday, October 21, 2023
Programming Crumar BIT99 with MIDI Controller
video upload by ohm_studi_ohm
"This synth is for sale. You can buy it directly (sales.ohmstudiohm@gmx.fr) for 1450 euros or buy it on eBay (https://www.ebay.com/itm/305202255093) or Reverb https://reverb.com/item/74807341) [pics captured here]
This is demo mainly to show how easy it is to program this synth thanks to the amazing work Bob Grieb (Tauntek) did by rewritting the firmware and enabling Midi Control Changes messages on this synth.
The only drawback (due to the hardware) is you have to retrigger a note for every change you make on a parameter, except for a few ones that a real time (resonance, DCO and LFO waveshape for instance). Just a minor annoyance compare to the original programming method (which is actually not the worse of that kind).
The BIT99 and BIT01 are very nice sounding and quite comprehensive 6 voice analog synth. They feature 2 DCOs with triangle, sawtooth and pulse waveform, in octave from 32 to 4 and you can combine the 3 waveforms on each oscillator. Dedicate ADSR enveloppes for filter and amp with velocity control, 2 LFOs, noise generator, split or stack possibilities etc
IMO they only lack a mixer for the 2 oscillators, LFO PWM (though you can control the PW with velocity) and a hi pass filter.
But the sound is very nice, I favore it over the Oberheim Matrix 6 for instance. It sits very easily in the mix. Build quality and keyboard are also of upper level."
Wednesday, December 15, 2021
Crumar Bit 99 with Tauntek Firmware Upgrade Midi CC Control & Sakata DPM 48
video upload by umusic6
"Bob Grieb did it again and brought Midi CC control to another old veteran synth: The Crumar Bit. Information can be found here: http://www.tauntek.com/CrumarBit.htm
You can also get the new Firmware Eproms , officially licensed, from https://www.untergeek.de/crumar-bit01...
My old iPad 1 is running theTB Midi Stuff App with the Bit Controller panel. But of course any other controller or software supporting customizable Midi CC will work."
Stereoping Controller Bit 99 Tauntek Firmware and Sakata DPM 48
video upload by umusic6
Sakata comes in at 2:23.
"Checking out the new firmware from www.tauntek.com for the Bit 99 with a early version of a stereoping controller layout.
Sakata DPM-48 on beats. Bit 99 sequenced by Yamaha RS 7000, DPM synced by KMS-30. Running through the new Klark Teknik 3rd Dimension."
Friday, March 23, 2018
KAWAI / TEISCO SX240 + Stereoping Controller
Published on Mar 23, 2018 Lackan
"A quick demo of the SX240 together with the Stereoping Synth Controller. A whole new synth when you can live tweak the knobs.
Requires the new OS developed by Bob Grieb www.tauntek.com. Get it from him or from untergeek.de if you are in Europe.
The controller is available from www.stereoping.com"
Sunday, January 10, 2021
DK Synergy II+ with Kaypro and Synergize talk about editing software
Note: Auction links are affiliate links for which the site may be compensated.
DeftAudio
"This is a completely restored Synergy II+ in a perfect condition and the best possible bundle you could imagine. It's up for sale:"
via this auction
"Hello. My name is Andrei Kudryavtsev. You probably know this because you're tracking my listings. This is a completely restored Synergy II+ in a perfect condition and the best possible bundle you could imagine.
Following upgrades have been performed on this system:
New power supply for a digital section, way more efficient and robust. Re-cap'ed analog power supply. instagram.com/p/BjmGR4WgLH3/
Upgraded cooling for less noise and better airflow.
New II+ upgrade board by Bob Grieb from Tauntek. This adds II+ Serial and MIDI connectivity, latest OS and 23 cartridges pre-load and accessible with a push of a button.
Cleaned boards, keyboard contacts
Everything is working. Comes together with a Kaypro computer running editing software (mint, same restoration cycle, upgraded power supply, two floppy emulators for Drive A and Drive B). Comes with Raspberry Pi and an optimized Kaypro emulator as well as Synergize control software.
All work is carefully documented and available in my Instagram with all dates it was performed. instagram.com/deftaudio/
This system needs a new home, a person who will be using it to make the music and not being distracted by common failures. All of those have been addressed to make your life easier and bring new life into this wonderful machine. I should say a disclaimer anyway, that as is a vintage gear....it may fail any moment...and obviously no return offered. However, I'm offering you my help in learning this great machine, and so you get 10 hours of my time at no charge. You can use it for whatever you want - set up and install online, learning session, tutorials, technical support etc... I want to make you happy.
What's included into the package:
1. DK Synergy II+
2. Kaypro Computer
3. Raspberry Pi
4. Apple Monitor, Apple Keyboard, Apple Mouse
5. Serial switch box and all required serial cables and adapters
6. All necessary cables."
DeftAudio
"This is a completely restored Synergy II+ in a perfect condition and the best possible bundle you could imagine. It's up for sale:"
via this auction
"Hello. My name is Andrei Kudryavtsev. You probably know this because you're tracking my listings. This is a completely restored Synergy II+ in a perfect condition and the best possible bundle you could imagine.
Following upgrades have been performed on this system:
New power supply for a digital section, way more efficient and robust. Re-cap'ed analog power supply. instagram.com/p/BjmGR4WgLH3/
Upgraded cooling for less noise and better airflow.
New II+ upgrade board by Bob Grieb from Tauntek. This adds II+ Serial and MIDI connectivity, latest OS and 23 cartridges pre-load and accessible with a push of a button.
Cleaned boards, keyboard contacts
Everything is working. Comes together with a Kaypro computer running editing software (mint, same restoration cycle, upgraded power supply, two floppy emulators for Drive A and Drive B). Comes with Raspberry Pi and an optimized Kaypro emulator as well as Synergize control software.
All work is carefully documented and available in my Instagram with all dates it was performed. instagram.com/deftaudio/
This system needs a new home, a person who will be using it to make the music and not being distracted by common failures. All of those have been addressed to make your life easier and bring new life into this wonderful machine. I should say a disclaimer anyway, that as is a vintage gear....it may fail any moment...and obviously no return offered. However, I'm offering you my help in learning this great machine, and so you get 10 hours of my time at no charge. You can use it for whatever you want - set up and install online, learning session, tutorials, technical support etc... I want to make you happy.
What's included into the package:
1. DK Synergy II+
2. Kaypro Computer
3. Raspberry Pi
4. Apple Monitor, Apple Keyboard, Apple Mouse
5. Serial switch box and all required serial cables and adapters
6. All necessary cables."
Saturday, August 29, 2020
MIDI Designer Editor for Kawai SX-240 w/ Tauntek Mod
You can find the editor here.
"With the great firmware update by Bob Grieb (tauntek.com) it's finally possible to control all parameters of a Kawai SX-240 via MIDI. Here's the MIDI Designer layout for the iPad to make full use of the new capabilities of this firmware update."
Friday, August 21, 2020
MIDI Designer layout for Crumar Bit 01 w/ Tauntek Mod
via MIDI Designer
"With the great firmware update by Bob Grieb (tauntek.com) it's finally possible to control all parameters of a Crumar Bit 01 via MIDI. This MIDI Designer layout for the iPad has been tested with a Crumar Bit 01, but should in theory also work with a Bit 99 and to some degree also with a Bit One. Since I only have a Bit 01 here, I couldn't test it myself, but comparing the CC maps of the three synths they look basically compatible (Bit 99 does not have Detune / Noise though, but CC's are otherwise identical).
Note: To use this layout please ensure your device is in Lower, Edit (Address) mode. CC's are only accepted in this mode. Please also note that you will exit this mode when changing a program (e.g. via the Up/Down steppers in this layout). So, after changing a program you'll need to manually enter the Lower, Edit (Address) mode again."
You can find the template here.
Thursday, May 02, 2019
Oberheim Matrix-6 w/ Wood Side Panels
Note: Auction links are affiliate links for which the site may be compensated.
via this auction
"This is probably my favorite analog subtractive synth of all time.
The Matrix series descended directly from the OB-8, which signaled Oberheim's move away from raw voltage power toward more precise dependability & vast programming possibilities. The Matrix 6 is the perfect compromise of heavenly analog sound & modern control, for under $3k. What it lacked in knobs it more than made up for in features: 2 completely independently-controllable digitally-regulated analog oscillators with the rare ability to use 2 independently shapeable waveforms simultaneously for EACH, a juicy low pass filter capable of self-oscillation, 3 envelopes, 3 LFO's (plus another global vibrato LFO), a multitude of modulation configurations, osc sync, unison, portamento, filter FM, velocity, aftertouch, and the ability to stack two presets. All this and it still sounds so unbelievably good. It was sort of held back by poor MIDI implementation, but synthhacker heroes Gligli & Bob Grieb re-coded the operating system so you could tweak every parameter with a SYSEX controller in real time. Now, Stereoping makes a rack unit with a knob for every function to unleash the almost endless power of the Matrix synths.
This Matrix 6 was rescued from a dumpster sometime in the 90's. It was given a new lease on life by a wiz techno producer, who also happened to be a carpenter during the day, so it was given new wooden endcheeks too. I bought it from him a few years ago when he was downsizing his studio. It wasn't in the best place. 2 of the keys were cracked, the volume pot was broken, the firmware was outdated, the waveforms weren't calibrating right, the filters weren't staying in tune, and sometimes, it just wouldn't turn on. I rebuilt the power supply, fixed up some frayed wire connections, bought a new DAC chip, replaced a broken trimmer, bought a new volume pot, sourced 2 replacement keys from a guy who 3D-prints replicas in Croatia (everywhere else in the world has long been out of original Matrix 6 keys), calibrated the DAC, recalibrated the 3 oscillators that handle tuning for all the voices, updated the firmware to the latest OS that fixes all the bugs, restored full aftertouch sensitivity, and installed a memory battery holder for ease of future replacement. I've been fixing up Matrix series synths for years now and they all suffer from instability in the CEM3396 voice chips that leads to carefully constructed patches melting into muck. Users tend to just replace the CEM's instead of fixing the root problems, so there's a now dire shortage of these chips. I've done work to ensure the synth will soldier on and never give you any hell, as long as you're nice to it. You can trust that all the usual reliability issues that plague Oberheims won't bother this Matrix.
This listing comes with the synth, a power cord, a huge ZIP file of 30+ years worth of patches, and my guarantee as a trained tech."
via this auction
"This is probably my favorite analog subtractive synth of all time.
The Matrix series descended directly from the OB-8, which signaled Oberheim's move away from raw voltage power toward more precise dependability & vast programming possibilities. The Matrix 6 is the perfect compromise of heavenly analog sound & modern control, for under $3k. What it lacked in knobs it more than made up for in features: 2 completely independently-controllable digitally-regulated analog oscillators with the rare ability to use 2 independently shapeable waveforms simultaneously for EACH, a juicy low pass filter capable of self-oscillation, 3 envelopes, 3 LFO's (plus another global vibrato LFO), a multitude of modulation configurations, osc sync, unison, portamento, filter FM, velocity, aftertouch, and the ability to stack two presets. All this and it still sounds so unbelievably good. It was sort of held back by poor MIDI implementation, but synthhacker heroes Gligli & Bob Grieb re-coded the operating system so you could tweak every parameter with a SYSEX controller in real time. Now, Stereoping makes a rack unit with a knob for every function to unleash the almost endless power of the Matrix synths.
This Matrix 6 was rescued from a dumpster sometime in the 90's. It was given a new lease on life by a wiz techno producer, who also happened to be a carpenter during the day, so it was given new wooden endcheeks too. I bought it from him a few years ago when he was downsizing his studio. It wasn't in the best place. 2 of the keys were cracked, the volume pot was broken, the firmware was outdated, the waveforms weren't calibrating right, the filters weren't staying in tune, and sometimes, it just wouldn't turn on. I rebuilt the power supply, fixed up some frayed wire connections, bought a new DAC chip, replaced a broken trimmer, bought a new volume pot, sourced 2 replacement keys from a guy who 3D-prints replicas in Croatia (everywhere else in the world has long been out of original Matrix 6 keys), calibrated the DAC, recalibrated the 3 oscillators that handle tuning for all the voices, updated the firmware to the latest OS that fixes all the bugs, restored full aftertouch sensitivity, and installed a memory battery holder for ease of future replacement. I've been fixing up Matrix series synths for years now and they all suffer from instability in the CEM3396 voice chips that leads to carefully constructed patches melting into muck. Users tend to just replace the CEM's instead of fixing the root problems, so there's a now dire shortage of these chips. I've done work to ensure the synth will soldier on and never give you any hell, as long as you're nice to it. You can trust that all the usual reliability issues that plague Oberheims won't bother this Matrix.
This listing comes with the synth, a power cord, a huge ZIP file of 30+ years worth of patches, and my guarantee as a trained tech."
Monday, October 04, 2021
Oberheim Matrix 6R Rackmount Analog Synthesizer
Note: Auction links are affiliate links for which the site may be compensated.
via this auction, also on Reverb
"Has the latest 2.15 EPROM from Bob Grieb."
via this auction, also on Reverb
"Has the latest 2.15 EPROM from Bob Grieb."
Tuesday, December 19, 2017
Midi Designer Pro Layout: Akai AX80 (latest firmware needed)
Published on Dec 19, 2017 MIDERA
"I have created a layout for the Akai AX80 using Midi Designer Pro 2 on the iPad. Linked here: http://mididesigner.com/qa/6339/layou...
You NEED the latest firmware to make this work (Rev I2, L2, or K2). Please see this website to purchase from Bob Grieb (or his associates): http://www.tauntek.com/AX80.htm"
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MATRIXSYNTH - EVERYTHING SYNTH
© 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