AI Synthesis Giving Away One AI010 Switching Attenuator a Day Through July 11

See this post for demos and details on the new AI010 Attenuator. AI Synthesis kits and modules are available at thonk.co.uk and synthcube.com.

From Monday the 8th, through Thursday the 11th of July, AI Synthesis is giving away one kit or built unit on their product page.

The following is the official press release on the availability of the new AI010 Switching Attenuator:

"Portland, OR, USA July 8, 2019 – AI Synthesis has released the AI010 Switching Attenuator in both a built and guaranteed version, as well as in kit and PCB/Panel format. The AI010 Attenuator was a limited run I made for myself, but people wanted them, so here they are. The AI010 has two different attenuator circuits, but they are normalled together, so it can also function as a 1 in, 3 out Multiple. The module allows users to attenuate and control voltage for modules that lack attenuation on a CV input, in only 2HP. Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale.

From Monday the 8th, through Thursday the 11th of July, I am giving away one kit or built unit on the product page at https://aisynthesis.com/product/eurorack-attenuator/

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”
-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system."

AI Synthesis Releases AI003 Looping Envelope Generator

The following is the official press release in via AI Synthesis. You can find two videos previously posted here and here.

"Portland, OR, USA November 29, 2016 – AI Synthesis has released its third module, the AI003 Looping Envelope Generator. Followed the tradition of its first two eurorack modules, the AI001 Multiple and AI002 Mixer the module has a full video how-to build guide, and is available as a fully built module, full kit, as a PCB and Panel set, and as PCB only. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale.

'In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.'
-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, each Build Guide includes a full-build video tutorial, so builders can see every step. The site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

Upcoming kits include filters, oscillators, and euclidian sequencers, all with the same painstaking quality, support, and resources."

You can find modules and kits at synthcube.com.

AI022 Eurorack Harmonic Mixer First Look

video upload by AI Synthesis

"A demo video for the AI Synthesis AI022 Eurorack Harmonic Mixer.

The AI022 Harmonic Mixer Eurorack Module is a discreet mixer, using no Integrated circuit chips, and increasing gain will add harmonics to incoming audio.

It can be purchased as a module, or DIY Kit and PCB/Panel Set.

The Bias knob adjusts voltage of the circuit, and adjusts how well or poorly the transistors replicate incoming audio. Adjusting the bias will add or decrease harmonic distortion."

Update:

AI022 DIY Harmonic Mixer Eurorack Module Build Guide Video

video upload by AI Synthesis

Update: pics and press release:

Portland, OR, USA 4/12/2022 – AI Synthesis has released the AI022 Harmonic Mixer in both a built and guaranteed version, as well as in kit and PCB/Panel format.

The AI022 Harmonic CP3 Style Mixer is a discreet mixer using no ICs. As gain increases harmonics and analog warmth are added. As gain increases more, distortion and phasing is added, creating new waveforms from old ones.

The AI022 takes inspiration from the legendary Moog Modular CP3 style mixer, but updates it for eurorack and allows for user customization of the circuit. Many Moog Modular users attribute the CP3 mixer module to providing much of the warmth of the Moog Modular sound.

An exposed Bias knob allows abuse of the circuit, and allows for faithful replication of incoming audio, or radical analog wave shaping and distortion. It is also possible to use the Bias knob to adjust a +/- 5V signal into a 0/+ or 0/- signal.

It comes in both Silver Aluminum versions and Black PCB FR4 versions.

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”
-Abraham Ingle
Founder, AI Synthesis In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

New AI Synthesis AI007 Eurorack Quad VCA Mixer

Published on Apr 13, 2020 AI Synthesis

AI007 DIY Quad VCA Eurorack Module Build Guide

Published on Apr 13, 2020 AI Synthesis

via AI Synthesis

"Portland, OR, USA April 10, 2020 –

AI Synthesis has released the AI007 Quad VCA/Mixer in both a built and guaranteed version, as well as in kit and PCB/Panel format. The AI007 Quad VCA Mixer is a compact, high quality, and flexible way to control voltage (audio or cv) in your modular system). Each of the four inputs are DC coupled, allowing the amplitude of CV signals as well as audio rate signals to be voltage controlled. The outputs are also normalled together into a mixer, allowing the AI007 Eurorack Quad VCA Mixer to be used as a voltage controlled mixer. Once a cable is patched into a VCA output that output is removed from the mixer signal, allowing each channel to be used independently, giving users four VCAs in total. A dedicated knob shapes the curve response from Linear to Exponential.

Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum."

AI Synthesis Ai008 Eurorack Matrix Mixer Module

Uploaded on Sep 2, 2019 AI Synthesis

Update: new videos added.

Playlist:
1. Using the AI008 Matrix Mixer as a Eurorack Feedback Mixer
2. Feedback oscillator Patching with a Matrix Mixer
3. Creating a CV Feedback Patch with the AI008 Matrix Mixer
4. AI008 DIY Eurorack Matrix Mixer build Guide

"Portland, OR, USA September 2, 2019 – AI Synthesis has released the AI008 Matrix Mixer in both a built and guaranteed version, as well as in kit and PCB/Panel format. The AI008 Matrix mixer has four inputs and three dedicated output, as well as a summed output. The module allows users to mix multiple inputs to multiple outputs, allowing for flexible routing of cv to multiple destinations, feedback FX patches, self-modulating oscillators, self-modulating cv sources, and many more applications. In 10HP.

Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale.

'In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.'

-Abraham Ingle
Founder, AI Synthesis"

https://aisynthesis.com/product/ai008-eurorack-matrix-mixer/

AI Synthesis Releases AI004 OTA Filter MS-20 Clone

See the video posted here.

"Portland, OR, USA March 12, 2018 – AI Synthesis has released its fourth module, the AI004 OTA Filter, a loving tribute to the late MS-20 filter design. Following the tradition of the first three eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full how-to build guide, and is available as a fully built module, full kit, as a PCB and Panel set, and as PCB only. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale.

'In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.'
-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

Upcoming kits include filters, oscillators, and VCAs, all with the same painstaking quality, support, and resources. Users can purchase modules and kits at aisynthesis.com, modularaddict.com, thonk.co.uk, https://foundsound.com.au/, and synthcube.com, with more retailers soon to come."

AI Synthesis Announces the AI028 Voltage Controlled Matrix Mixer

video upload by AI Synthesis

Press release follows:

Portland, OR, USA January 28, 2025 – AI Synthesis has announced the AI028 Voltage Controlled Matrix Mixer

The AI028 uses the new SSI2190 PROCIRCUIT™ 6-INTO-1 VOLTAGE CONTROLLED MIXER* ICs to create a 6 in, 6 out Voltage Controlled Matrix Mixer. Each column of jack nodes is a VCA input that will amplify the input from the left to the output on the bottom from silent 0V to full unity volume at 5V. The inputs and VCA circuits will accept Audio and CV signals. For those who want to manually control voltage, a 5V output is present in the lower left that, with a passive attenuator, can be used to manually control the volume of a node. While currently in manufacture, due to the Lunar New Year, it is temporarily on hold and is expected to ship in February or March. Presales are now open on https://aisynthesis.com/product/ai028-voltage-controlled-matrix-mixer and will be shipped on a first come/first served basis.

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”

-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system."

https://aisynthesis.com

AI Synthesis Introduces the AI024 X Filter Eurorack Module

video upload by AI Synthesis

AI024 Eurorack X Filter Build Guide


Press release follows:


Portland, OR, USA january 3, 2024 – AI Synthesis has released the AI024 X Filter in both a built and guaranteed version, as well as in kit and PCB/Panel format.

The AI024 Eurorack X Filter is a eurorack Voltage controlled filter that brings the clean, classic, creamy four-pole low pass filtering of classic 80s synths to Eurorack.

The resonance will self oscillate and track 1/V per octave. With two AI024s and a stackable cable, an elegant stereo filter is created.

Depth: 35mm
HP: 6
-V mA: 13 mA
+V mA: 13 mA

'In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.'

-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

---

Check with the dealers on the right for availability.

AI Synthesis Releases AI106 West Coast Eurorack Mixer

video upload by AI Synthesis

AI106 DIY West Coast Eurorack Mixer Build Guide Video

Portland, OR, USA January 31, 2023 – AI Synthesis has released the AI106 West Coast Mixer in both a built and guaranteed version, as well as in kit and PCB/Panel format.

The AI106 West Coast Mixer is a discreet mixer using no ICs. As gain increases harmonics and analog warmth are added. The AI106 takes inspiration from the mixers in 1960s West Coast Modular systems, but updates it for eurorack and allows for user customization of the circuit. New, Old, and mismatched NPN transistors can be substituted to change the character of the mixer.True to original spirit, the output is inverted.

It comes in both Silver Aluminum versions and Black PCB FR4 versions.
Depth: 22mm
HP: 6
-V mA: 0
+V mA: 12mA

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”
-Abraham Ingle
Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

AI Synthesis Releases new Eurorack High Power Supply

video upload by AI Synthesis

Press release follows.

Portland, OR, USA March 12, 2025 – AI Synthesis has announced the Eurorack High Power Supply

The Eurorack High Power Supply is a low-noise solution for powering large, power hungry systems. The Power Supply supplies a total of 5 AMPs (5,000mA) of +12v power, 2.5 Amps (2,500mA) of -12V power, Ground, and 400mA of +5V power to your modules via 12 shrouded connectors, and multiple chain points to other distribution boards. Four LEDs indicate status of the four power rails, and the Power Brick is included. The Eurorack High Power Supply uses super quiet DC to DC converters to turn one powerful DC brick into four reliable, quiet, power rails:

+12V A: 2.5 Amps
+12V B: 2.5 Amps
-12v: 2.5 Amps
+5V: 400mA
Headers 1-6 Draw their +12V from +12VA, and Headers 7-12 draw their +12V from +12VB.

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”

-Abraham Ingle

Founder, AI Synthesis

In addition to providing step by step build instructions, schematics, and circuit explanations, the site also includes a guide for getting started in modular synthesis, and a series of DIY Guides, with information regarding how Resistors actually work, and how to integrate a $26 scope into your Eurorack system.

AI Synthesis Introduces the AI012 Eurorack Wave Animator Eurorack Module

video upload by AI Synthesis

"A Demo Video for the AI012 Eurorack Wave Animator

The AI012 Eurorack Wave Animator produces two pulses per input wave cycle with voltage controlled pulse width, distance, and amplitude of the second pulse.

It can be purchased as a module, or DIY Kit and PCB/Panel Set at https://aisynthesis.com/product/ai012..."

AI012 Wave Animator BUILD VIDEO

"The AI012 Eurorack Wave Animator produces two pulses per input wave cycle with voltage controlled pulse width, distance, and amplitude of the second pulse.

The manual is here.

The DIY Eurorack Wave Animator build guide is here."

Update: press release follows:

Portland, OR, USA August 17, 2023 – AI Synthesis has released the AI012 Eurorack Wave Animator in both a built and guaranteed version, as well as in kit and PCB/Panel format.
The AI012 Wave Animator is a Waveshaper/VCO Expander that produces two pulses per input wave cycle with voltage controlled pulse width, distance, and amplitude of the second pulse. This design was adapted (with permission and a few changes) from Ian Fritz’s Double Pulse Generator circuit. Some changes were made to the circuit in development.
While the circuit is all analog, the AI012 Eurorack Wave Animator’s pulse wave outputs have a range of timbres from analog wave folding to digital sounding chimes.
The Width of each Pulse is controlled by the AI012 Eurorack Wave Animator’s Width knob and corresponding attenuatable cv input.
The Distance between the second pulse and the first pulse is controlled by the AI012 Eurorack Wave Animator’s Distance knob and corresponding attenuatable cv input. The resulting waveform can have two distinct pulses, or staircase style wave-shapes.
The Amplitude of the second pulse is controlled by the AI012 Eurorack Wave Animator’s Amplitude knob and corresponding attenuatable cv input. It can be negative or positive in voltage value.
In addition to creating new audio rate waveforms, when used as a sequencer, the module can create interesting rythmic variations when the pulses are used as triggers and cv is used to stagger the second trigger.
It comes in both Silver Aluminum versions and Black PCB FR4 versions.
Depth: 35mm
HP: 8
-V mA: 13mA
+V mA: 13mA

“In the year 2000, I was in college and obsessed with modular synths, but could barely afford to eat. I knew it was possible to build your own synth, but there wasn’t anyone, or anywhere to turn to for advice. In the past decade, much more information has been published online, and in 2013 I started down my path to DIY modular. Even with all of the information online, there still lacked a single, simple, comprehensive guide for those looking to build their own synthesizer. I want AI Synthesis to be that guide. Prior to building my own synth, I was a dreamer, after building my modular, I felt I had awoken. I want to help others do the same.”
-Abraham Ingle - Founder, AI Synthesis

New AI Synthesis AI016 Eurorack Tape Echo Interface & AI011 Eurorack Analog VCO

Published on Dec 3, 2019 AI Synthesis

New module from AI Synthesis along with the AI011 Eurorack Analog VCO posted here.

Playlist for the video embed above:
AI016 Eurorack Tape Echo Interface Video
Modded MARANTZ PMD221 Tape Recorder as a Tape Echo
AI016 Tape Interface Build Video Guide

Press release including the AI011 VCO followed by pics and additional details on the AI016 (AI011 posted here).

"Portland, OR, USA December 3, 2019 – AI Synthesis has released the AI011 Analog VCO and AI016 Tape Interface in both a built and guaranteed version, as well as in kit and PCB/Panel format. The AI011 Analog VCO is a robust and stable analog Eurorack VCO. Using the legendary curtis 3340 IC, the Oscillator provides buffered Triangle, Square, and Ramp waveforms, as well as a triangle to sine wave shaper to provide a sine wave output. The AI016 is a tape interface that allows user to use a humble three-head cassette recorder as a real analog tape echo.
Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale."

"The AI016 Eurorack Tape Echo Interface is a Limited Edition Module that uses a pre-amp and buffered feedback loops to allow a standard three head tape recorder as an analog tape echo. It also provides op-amp saturation on the input when pushed.

The tape recorder must have three heads (erase, record, and play) for it to work as a tape echo. This type of tape recorder will have a button or switch that allows the monitoring of the source audio, or what has just been recorded to the tape. The space between the record and play head creates the delay, and the Tape Interface feeds back into the unit to create repeats.

The AI016 provides the following tape controls:
Mix
Repeats
Input and Output Controls
Delay time is controlled by the tape deck. Not all tape decks allow speed control while recording, and modifications may be needed.
Kits include all parts needed to build and mount the AI011 Eurorack VCO:
Hi Quality Aluminum Panel
Mounting Screws
Potentiometers
Jacks and Nuts
Power cable

Please note that a three-head tape recorder is needed for tape echo. While I do support the AI016, I do not support 3rd party tape decks or for 3rd Party tape deck modifications."

New AI Synthesis AI006 Stomp Box Adapter Eurorack Module

Uploaded on Dec 30, 2018 AI Synthesis

via AI Synthesis

"AI Synthesis has released its fifth module, the AI006 Stomp Box Adapter in both a built and guaranteed version, as well as in kit and PCB/Panel format. The AI006 stomp box adapter provides simple, inexpensive “set and forget it” conversion between modular signals and guitar level signals, allowing users to get the most from their stomp boxes when interfacing with their modular system, in only 2HP. Following the tradition of the other eurorack modules, the AI001 Multiple,AI002 Mixer, and AI003 Looping ADSR, the module has a full video how-to build guide. Unlike some DIY companies that focus solely on providing kits, AI Synthesis has an educational mission and our kits and documentation are aimed at those who have never held a soldering iron. PCBS are professionally manufactured, and all panels are aluminum and designed by Grayscale.

Ai017 Eurorack Low Pass Gate First Look

video upload by AI Synthesis

"A demo video for the AI Synthesis AI017 Eurorack Low Pass Gate.
Available at aisynthesis.com
The AI017 Low Pass Gate Eurorack Module can be used as a Voltage Controlled Filter, Voltage controlled Amplifier, or both. The AI017 is an updated variation of the classic Buchla 200 Series Low Pass Gate, updated with a tunable resonance circuit, and a Depth control. Vactrols are used for control voltage, allowing for classic "ringing" and "bongo" effects.

It can be purchased as a module, or DIY Kit and PCB/Panel Set.

The Depth control compensates the vactrols inability to drop lower than 100 ohms, which can allow audio bleed on traditional Low Pass Gates. The effect can be switched on or off, as depth will attenuate the classic ringing and bongo effect. This gives the user an easy way to go from a "vintage" Low Pass Gate to a "modern" Low Pass Gate with a flick of the switch. A rear trimmer allows for the tuning of the resonance."

Ai017 DIY Low Pass Gate Build Video

video upload by AI Synthesis

VELOCITY SYNTH MEET Coming to Seattle October 5th

Details here: https://www.velocityseattle.com

Exhibitors

4ms 4mscompany.com

4ms Company offers alternatives to traditional instruments with our poly-rhythmic clock modules that create evolving complex mathematical beat patterns, a resonator that can cast pop music into micro-tonal keys, a multi-channel wavetable oscillator, a routing matrix that's played like an instrument, and many more innovative devices. Rather than replicate concepts from the past, we strive to turn unique ideas into playable musical tools that expand the possibilities of music. We also offer Do-It-Yourself kits, and many of our designs are open-source.

Acid Rain Technology acidraintechnology.com

Acid Rain Technology is a manufacturer of music hardware out of Seattle, WA. We believe hardware instruments enable a unique connection between human and machine, and seek to improve this interaction through interface design for maximum playability.

After Later Audio afterlateraudio.com

After Later Audio is a boutique audio company located in Seattle, Washington. We make high quality Eurorack modules at accessible prices and we pride ourselves on responsive customer service. You can find our products for sale on our website, at various synth shops (Patchwerks, London Modular, Chuck Levin’s, and Modular 8), and on all of the major ecommerce sites.

CLICK FOR MORE »

The Joy Of Soldering DIY Tutorials by AI Synthesis

Published on Jul 7, 2016 AI Synthesis

http://aisynthesis.com

Playlist:
AI001 DIY Modular Synthesizer Full Build Guide Video
AI002 Mixer DIY modular synth full build video

Module details follow:

CLICK FOR MORE »

New AI Synthesis AI011 Eurorack Analog VCO

Published on Nov 21, 2019 AI Synthesis

"A walk through of the 8HP analog VCO Eurorack Module usign the legendary 3340 IC.
Available at aisynthesis.com as a PCB/Panel, full kit, or built and tested unit with a 1 year warranty."

"The AI011 Analog VCO is a robust and stable analog Eurorack VCO. Using the legendary curtis 3340 IC, the Oscillator provides buffered Triangle, Square, and Ramp waveforms, as well as a triangle to sine wave shaper to provide a sine wave output.

The Eurorack VCO features both Coarse and Fine tune knobs for easy tuning.

Pulse Width Modulation is normalled to the PWM input jack, so PWM is controlled with the PWM knob, and when a jack is inserted, the knob serves as an attenuator.

Volt per octave and FM input jacks are present, with an attenuator for FM modulation.

The VCO is capable of both hard and soft sync.

An expander jack is present at the rear of the module for use with future AI modules.

Kits include all parts needed to build and mount the AI011 Eurorack VCO:

Hi Quality Aluminum Panel
Mounting Screws
Potentiometers
Jacks and Nuts
Power cable"

When the Spec Becomes Code: Building a Norns Instrument with AI

video upload by Lesjamusic

"Building PolyNexus: A Complete Norns Instrument, using Claude AI

I used to struggle with "vibe coding" - throwing prompts at AI and hoping for working software. Then I discovered the article "When the Spec Becomes the Code," and everything changed.

Spec-driven development (SDD) transformed my workflow. Instead of generating code through endless prompts, I focus on creating clear specifications first. The spec becomes the blueprint, and Claude AI helps compile it into working code.

PolyNexus is the result of this approach - a complete generative polyphonic instrument for Monome Norns that evolved far beyond my initial vision. What started as a chord sequencer grew ambitious: I built PolyVoice, a custom 6-voice synthesizer engine in SuperCollider, based on three Plaits oscillator models with wavefolding, sample rate reduction, and comprehensive modulation.

The best part? Spec-driven development gave me the confidence to tackle SuperCollider synthesis, something I wouldn't have attempted with traditional "vibe coding."

🎹 PolyNexus Features:

PolyVoice Synthesis Engine: • Custom 6-voice polyphonic SuperCollider engine • Three Plaits-inspired oscillator models (morph, waveshaping, wavetable) • Wavefolding for harmonic complexity • Sample rate reduction for lo-fi textures • Independent LFOs and envelope control per voice

Generative Sequencer: • 16-chord harmonic palette (monome Grid row 1) • Probabilistic note retriggering engine • Random chord sequencer for compositional surprises • Bass and sub-bass sequencer for rhythmic foundation • Real-time playable notes (Grid row 5)

Analog-Style Effects Chain: • Tape character: flutter, wow, saturation, tape noise • Tape-style delay with feedback and rate control • Multi-mode filtering for tone shaping

🔗 Resources: • Jean Bovet: "When the Spec Becomes the Code" - / when-the-spec-becomes-the-code • PolyNexus (coming soon to lines community) • monome Norns - https://monome.org • Mutable Instruments Plaits • SuperCollider synthesis language

⏱️ Timeline:
0:00 - Introduction: The Struggle with Vibe Coding
01:51 - Discovery: Spec-Driven Development
04:33 - What is PolyNexus?
12:37 - Live Performance

Want to try spec-driven development? Start by describing what you want to build in clear, detailed language. Iterate on the specification until it's crystal clear. Then let AI help compile it into code. You'll be amazed at what becomes possible."

AI Synthesis interview // synth DIY, new Eurorack modules, personal background and bad tomatoes

Published on Feb 20, 2020 DivKidVideo

"The tomato huffing, red fruit loving Abe of AI Synthesis invited me over to his studio space and tomato love garden while I was in the states to chat synths, his background, synth DIY and new modules. I jumped at the chance and here we are. With some footage of his current modules interpreted into the casual interview where I learnt what "mealy" means. I hope you enjoy these videos (I had a lot of fun with this one) as there's lots more to come from DivKid's West Coast Adventure!"

AI Synthesis AI004 OTA MS-20-filter clone Full How to Build Video

Published on Jan 10, 2018 AI Synthesis

"A video showing every step of building the AI004 OTA Filter Eurorack MS-20 Filter clone."