MATRIXSYNTH: Thursday, March 17, 2022

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Thursday, March 17, 2022

Zerosum Inertia - BFK9000 Synthesizer Processor.

video upload by NOISEBUG

"The Zerosum Inertia is a synthesizer in a pedal/desktop format that offers some very interesting processing power for external signals. Thus unit can also be used on its own with the external cv input to create melodic synth lines and odd harmonic bass lines.

In this video we play the dry signal first and then bring in the BFK9000 for crushing and processing."

via Noisebug

"Loaded with New Old Stock JAN(Joint Army Navy) stamped 6CB6 pentodes designed to meet the high quality and reliability standards of the United States Military.
Manufactured by Sylvania, Philips, Radio Corporation Of America, and General Electric in the 1960’s-1980’s.

Switchcraft jacks and Alpha potentiometers flown on wires and firmly bolted to aluminum enclosure to avoid stress applied to circuit board.

Circuit board attached to enclosure with standoffs again to reduce stress and tension being applied to circuit board.
IC's are socketed, NOT soldered directly to circuit board to make easy replacement later if/when needed.
High quality long life high temperature low impedance electrolytic capacitors from Rubycon and United Chemi-Con.
5% NP0 capacitors in the power section and audio path.
5% metalized polypropylene in the PLL sections.
1% metal film resistors.
High quality 2A/25W medical grade 12v center postive DC power adapter is included. Only use 12v DC center positive power source included.
Engraved enclosure(NO STICKER!!!!)

The BFK9000 is an effects processor designed to process audio signals from your modular synthesizer.
VCO waveforms are an ideal source.
Guitar will also produce interesting results. It is recommended that you patch your guitar into a preamp with an envelope follower before the BFK9000. Crank the gain and then patch the envelope out into the CV input of the BFK9000.
The more gain you hit the audio input with the better the PLL's will track.

The higher the frequency the better the tracking.

Try cranking the PLL frequency to max then patching the output of the BFK9000 into a divider or pitch shifter down an octave or two.
Patch LFO's, audio rate VCO's, envelopes, envelope followers, sequencers, random voltages, rhythmic pulses into the CV input.

Signal flow of the BFK9000 is 2 6CB6 pentodes providing gain to drive 2 4046 Phase Locked Loop chips behaving as primitive oscillators in parallel, but not wired up like a traditional PLL you may be familiar with.
There is some conversation going on between the 2 4046's.....Something about an alien transmission of unknown origin scrambled with intermodulation and beating.

Frequency of PLL pitch and amount of PLL influence level for each 4046, 1 set on the left and 1 set on the right.
Tube gain is maxed at full gain, no knob.
1 switch for each PLL that controls the behavior characteristics of each PLL."

MOOG MICROMOOG Synthesizer w/ Clear Backlit Front Planel

via this auction

"This Micromoog had been modified with lights and a clear face plate to show off the underlying circuit board. One of my all time favorite mono-synths. The ribbon, mod wheel, everything works. It needs a tune up though, would be a good idea to get the caps replaced. Cosmetically, it is in good condition. No major dents or dings to speak of. I have the original face plate but it has a crack in it. I'm happy to take offers or questions if you have either or both."

Isla Instruments' Roland Jupiter 6 61-Key Synthesizer For Sale

video upload by Isla Instruments

via this auction

"In lovely condition, a few very minor scuffs as pointed out in the video.

Just finished servicing it.
All pots and sliders cleaned and re-lubricated (all sliders feel lovely and buttery)
New battery
Factory Patches Loaded
Thoroughly cleaned inside and out."

“Fates” Monome Norns Clone

via this auction

"Very little use, latest firmware, runs on Raspberry Pi 4B, faster and more memory than OG Norns. Ships with USB-C power adapter and 16gb SD card. The encoders are a little jumpy when turned quickly, and only on the PARAMS page, which I’ve learned is a common issue and can be rectified by editing the appropriate Lua file. Cheers!"

Ensoniq ASR-10 Rackmount Advanced Sampling Recorder Module SN ASR-10361

via this auction

"Sweetsounding Sampler, Workstation and FX Unit from the 90s in Good Condition. 16MB on Board (max) and SCSI, many Disks and the Original Manual."

Eurorack Ring Modulators

video upload by John Schussler

"Ring modulation, according to the interwebs, is basically AM modulation (amplitude modulation) that goes through the full cycle. In AM modulation, any frequency below zero simply stops the oscillator. With ring modulation, you're still modulating the amplitude, but when the signal goes below zero volts it inverts the oscillator signal rather than stopping it. This creates a variety of new harmonics.

But those aren't necessarily 'ringing' harmonics. The ring in the name comes from the fact that most ring modulators use a "ring" of 4 diodes one into the other to create the effect.

Here's a sampling of the modules I have at the moment, doing a basic comparison of how their timbres differ. And a few have extra features that I'll try to resist playing with for sake of a fair comparison, but will probably fail in the attempt.

Sequence: Stochastic IG. VCO: Dixie II+ square (carrier) and saw (modulator). Envelope: Zadar

00:00 Intro
00:20 Blokan
03:56 RK3
09:35 Erica Synths
15:14 Serge
19:24 Gated sequence
27:28 Ring SM
35:47 E560"

Dreamsynth Quick Minute

video upload by boxoftextures

"New from Cherry Audio.

Only had this a few minutes and already feel totally at home in it. Just made these three patches and wanted to get this out there so folks could get an idea of what it's about. This is the short version just to hear the patches though, the longer version will show how I built them. Might take me a day or three to get that edited though.

This thing's a winner. Three oscillators, each with dual waves with hundreds of choices, three LFOs, easy and flexible modulation and routing, sounds great. It's deep yet at the same time simple to operate. Recommended.

Dreamsynth, from Cherry Audio

Edited in ScreenFlow
Audio routing done in Rogue Amoeba Loopback


ASM HYDRASYNTH: Microtonal sequencing with step LFOs

video upload by CALUTRON

"The step function of the Hydrasynth's LFOs is a powerful tool. You can use it to create microtonal sequences even without switching to an alternative tuning for the whole synth."

KORG EX-8000

video upload by SyntheticMachines

"3 multitrack demos made with the KORG EX-8000 synthesizer

part1: 00:00 all sounds from the EX-8000
part2: 02:49 EX-8000 + Synthwave Drums VSTi
part3: 06:08 EX-8000 + Future Retro Transient

part3: all drums and FX sounds were made with the FR Transient, controlled via the Stillson Hammer MK2. I've used 3 cv + gate controlled tracks, multitrack recorded + additional FX (reverb, delay & compression). As always a multitrack recording with some fx."

Sequential Artist Spotlight: The Graduating Class

video upload by Sequential

"Portland band The Graduating Class describe their sound as "Anderson .Paak and Daryl Hall going on a three week bender in Quincy Jones’ studio." Stylistically, the group blends modern production techniques with tonal and songwriting influences from the 1970s and 80s, and guitarist John Queant serves as the lead producer on every song.

This video spotlight features John Queant with the Prophet Rev2 and Prophet-5 synthesizers.

Follow The Graduating Class here:

More info on Sequential instruments:"

You can find additional posts featuring Sequential's Spotlight series here.

SCI Prophet 5 and 10 - Molte voci

video upload by Glen H

"This short improvisation came after playing with the patch 533 - Blades from J3POs P5 patches - [posted here]
which are fantastic by the way, thanks J3PO!. I then starting building something very similar on the P5 Rev 2 and hit record.
Prophets are going via SSL2+ into Ableton and have some Valhalla Supermassive Triangulum reverb.
#SequentialCircuits #Sequential #Prophet5 #Prophet10 @j3po"

Moog Matriarch + Sequential Pro 3 Generative Ambient Dreamscape

video upload by MKDVB

"I could listen to the Moog Matriarch doing its self generative ambient dreamscape music for hours. This time around, I patched in the Sequential Pro 3 for added textural ambient synth goodness. The small eurorack modular rig was all patched up but between the Matriarch, Pro 3 and Microvolt 3900, the soundscape was full enough.

Moog Matriarch - Generative ambient rhythm line and sequences
Sequential Pro 3 - Lead ambient synth sounds
Pittsburgh Modular Microvolt 3900 - Tinkly high ambient synth sounds
Chase Bliss Meris CXM 1978
Additional plug-in FX in post."

The 808 and 909 clone in ONE box!

video upload by Ricky Tinez

"The Novation DrumStation is probably one of the rarer drum machines or drum rack units i've ever come across. I've wanted one for ages, and they always seem to slip passed me, and eventually i convinced myself i didn't need it. Now that i have it i Love! It uses ASM technology with digitally models analog waveshapes and sounds to recreate the sounds of the original Roland TR-808 and Roland TR-909 drum machines. I think it's an incredible alternative giving you access to both machines at once."

00:00 What is it?
02:29 My Favorite Feature
03:55 How I Use It
05:10 How The Panel Works
07:48 The Wrap Up
09:09 Voice Stealing
09:57 New Merch!

JLR's Modular Synthesizers - System Breakdown #4 -

video upload by John L Rice

JLR's Modular Synthesizers System Breakdown posts

"This is the fourth video breakdown/rundown for one of my modular synth systems, this time I'm doing one of my smallest 5U systems that is in a Moon Modular case. Next time I'll do my Ace toolbox Eurorack system. Please subscribe to my channel and click the 'bell' button to be notified when I post new videos! :-)

0:00 Beginning
0:20 Introduction/
3:08 Modules and Modifications Overview
7:23 Modification Details
11:05 Miscellaneous Items and Final Words
11:55 Low Effort Nothing To Write Home About System Wiggle
19:04 End

List of manufacturers and modules in this system:
Corsynth - C112 Assistants
Club of the Knobs - C 1631 - Q167
Electrosmith - 3340 VCO (x 2)
Electrosmith - 2144 LPF - Q109 (x 2) - Q148 - Q115

You can see details of the modules on my ModularGrid page:

Check out the music of Dallas Acid at

As always, thank you for watching, rating, following, subscribing, and commenting! 🥳 Please consider "buying me a coffee" if you found the content of this video helpful, interesting, or entertaining.

Tentative Schedule Revised Dec 1 2021 (subject to change)
1) 5U - DotCom Tolex Jul 08, 2021
2) 5U - DotCom Box11 Aug 18, 2021
3) ER - EWI Briefcase Dec 01, 2021
4) 5U - Suppliment #1 Mar 03, 2022
4) 5U - Moon Case Mar 17, 2022
5) ER - Ace Toolbox (Apr 01, 2022)
6) 5U - Triple Box4 (May 01, 2022)
7) ER - RoadReady (Jun 01, 2022)
8) 5U - EWI 16 table (Jul 01, 2022)
9) ER - Pedalboard/Pod (Aug 01, 2022)
10) 5U - GRP Case (Sep 01, 2022)
11) ER - EWI Table case (Oct 01, 2022)
12) 5U - EWI 16 seq+syn (Nov 01, 2022)
13) 5U - The WALL! (Dec 01, 2022)
14) Series wrap up? (??? ??, 2023)"

The 80s DREAMSYNTH by Cherry Audio

video upload by Cherry Audio

video upload by Starsky Carr

"A first look at Cherry Audio's novel Dreamsynth. Imagine you're back in the 80s looking at an impenetrable D50 interface and wishing you could afford a Jupiter 8... here we've got an Oberheim style state variable filter, virtual analog oscillators or PCM Samples or single cycle samples, single shot cycles... you get the point,. Plus a really intuitive interface."

Description for the top video:

"Cherry Audio's Dreamsynth is a tribute to the celebrated hybrid analog/digital synthesizers of the mid-to-late 1980s. The innovative design blends flexible dual-wave morphing oscillators, stereo filters, a fully polyphonic string synthesizer, extensive and easy-to-use modulation, studio-quality effects, and MPE support, all in an elegant vintage-style synth interface.

Cherry Audio's Dreamsynth synthesizer is available now at and authorized resellers worldwide for the incredibly low price of only $39!

- Innovative design blends flexible dual-wave morphing oscillators, stereo filters, analog strings, extensive modulation, studio-quality effects, and MPE support, all in an elegant vintage-style synth interface
- Three dual-waveform oscillators, amounting to six simultaneous virtual analog or PCM sample-based oscillators with up to 16 voices of polyphony
- Authentically modeled virtual analog waveforms, plus 430 looping, one-shot, and single-cycle PCM waveforms
- Fully polyphonic 16-voice string synthesizer can be layered and split independently of the primary synth
- Three tempo-syncable LFOs
- Arpeggiator, independently assignable to synth or string sections
- OB-style 12 dB/octave multimode stereo filters
- Extensive and accessible modulation: 20 mod sources and over 40 destinations, including effects
- Effects include distortion and sample-crushing, 12-stage phaser, chorus, flanger, rotary speaker, delay, and reverb, including the new "Galactic" reverb algorithm
- Support for MIDI Polyphonic Expression (MPE) -- Pitch, Channel Pressure, and Timbre -- making Dreamsynth capable of more organic and expressive performances when using MPE-compatible controllers
- A massive library of over 1100 presets from a wildly talented and diverse group of sound designers including James Terris, Katharine Fountain aka FOUNTAINS, Julian Pollack (J3PO), Julie Kathryn (I AM SNOW ANGEL), Huston Singletary, Mark Wilcox, Dave Polich, Joseph Holiday, Agent Method, and Venus Theory

Dreamsynth is available in AU, VST, VST3, AAX, and standalone formats, for macOS and Windows. It includes native support for Apple's M1 processor and is fully compatible with macOS 12 Monterey. A free 30-day demo is available. Visit for additional product details, system requirements, and an expansive collection of awe-inspiring sound demos."

Jamming with Erica Synths LXR-02, MB33 and Circuit Tracks

video upload by motobor

"Trying out some new gear. Erica Synths LXR-02 is a nice compact drum machine / synth, capable of producing wide range of sounds - from classic classic drum sounds to weird blips and bloops."

3 Panel Home Built 73-75 Serge in Folding Case

via this auction

"73-75 Serge home Built and voice with cycling & LED Mods in 3 panel folding case."

Serge 73-75 Home Built Suitcase Synth

via this auction

"73-75 Serge home Built with cycling & LED Mods in vintage case with removable lid."

Original Novation Bass Station 25-Key Analogue Bass Synth

via this auction

"Exclusive gear from the private collection of Richard Z. Kruspe. Has been played live or in the studio with Rammstein and Emigrate. Every item comes with a certificate of authenticity, signed by Richard himself. A signed document of authenticity is included."

MFB Synth II SN 09715

via this auction

"Very special mfb synth from the now passed away german creator. Those that know, know. Beautiful synth with great sound and sequencer! Almost as new"

Clavia Nord Modular Keyboard Polyphonic Modular Synthesizer

via this auction

"This listing is for a Clavia Nord Modular Keyboard with a CD-R.
This CD-R contains Modular Editor, PDF Manual, Preset Patches(Nord Modular Factory Presets, micro Modular Factory Presets and Extra Patches; Total about 600 Patches).
This unit is 100% perfect working. In good condition."

CASIO VZ-1 Synthesizer With Memory Card

via this auction

Modal Cobalt8 37-key 8-voice Extended Virtual Analog Synth

via this auction

Ah Kosmos! On The Wall Of Test Equipment

video upload by HAINBACH

"I have been working on a record with @AH! KOSMOS for two months now and its been a blast! Here is the first snippet I can share. She is the first beside me to play my wall of science junk, which makes me rather happy - its nice to see others play your instruments, even if its obsolete machines patches together haphazardly. We will continue work on the record and share more as it comes along."

Imaginando FRMS, Birdkids OffGrid and Cocoquantus2

video upload by Luca Longobardi

"I put together a very special live set that will debut very soon.
Looking forward to tell you more about it."

Cobalt8 vs Argon8 Modal Synth Battle Spectacle

video upload by Aperture Sound Lab

"A Suite of mini jams made entirely of Argon8 and Cobalt8. Paired together, Solo one-make. - Doesn't matter. They're 2 of my go-to synths for just about every type of music out there... Enjoy. More sounds for synths at

All Music Written and Produced by Major Oscillator"

Vermona Perfourmer Mk2 Plays Bach - BWV 847 (Bach on Analog Synthesizer)

video upload by Jannis Le Wolff

"𝄞 in this video I'm going to to send Bach's Prelude and Fugue in C Minor from the Well Tempered Clavier through my Vermona Perfourmer Mk2 Analog Synthesizer. It became some highly meditative moment, since the Perfourmer adds a lot of character and personality to the timeless genius of Bach.

The first oscillator is playing the left hand (mostly) while the other 3 oscillators play most of the right hand parts, and sometimes also the polyphony.

I used the midi files from Bernd Krueger @ "" (thanks a lot for the work!)"

Patch n Tweak
Switched On Make Synthesizer Evolution Vintage Synthesizers Creating Sound Fundlementals of Synthesizer Programming Kraftwerk

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