Name: AI Synthesis AI008
Brand: AI Synthesis

A no-frills, build-it-yourself matrix mixer with a lot of patch flexibility for its size. You solder it yourself.

Overview

The AI Synthesis AI008 is for anyone who wants to route CV signals around a Eurorack case like a switchboard operator from 1958. It isn't flashy, doesn't respond to MIDI, and won't modulate itself. It does one job: any of its four inputs can feed any of its outputs through a grid of knobs. You don't buy it for sonic character. You build it because you need routing flexibility without eating up half your panel space. Most people who own one built it themselves from a through-hole kit.

The AI008 is a compact, inexpensive matrix mixer. It isn't a performance centerpiece. It's the behind-the-scenes utility player that makes complex patches possible, the duct tape and baling wire of a modular setup. AI Synthesis positions it as a natural second build after their AI001 Multiple. Once you've soldered passive splits, an active, buffered mixer is the next step up in circuitry.

The AI008 isn't trying to outshine the Doepfer A-138m, its closest competitor. It's trying to undercut it in price and complexity while doing the same job. You aren't paying for bells, whistles, or CV control. You're paying for a DC-coupled mixer that handles both audio and control voltages with no crosstalk trouble. Owners report less signal bleed than some other budget matrix mixers, and the color-coded outputs and clearly labeled I/O make it intuitive once assembled.

Specifications

Manufacturer	AI Synthesis
Width	10hp
Depth	35mm
Power consumption	+17mA, -17mA
Module Height	3U
Panel Colour	Available in Silver and Black
I/O configuration	4 inputs, 3 individual outputs, plus a 4th summed output (A+B+C)
Controls	Twelve potentiometers (one per input/output pair)
CV Control	No CV control over mixing levels
Signal Inversion	Does not invert signals
DIY Kit Type	Through-hole (THT) kit
Kit Contents	Includes all parts to build the module
Made in	United States
MPN	AI008-BLK (for Black variant; Silver variant likely has different suffix)

Key Features

Active, Buffered, and DC-Coupled—No Guesswork

The AI008 is an active, buffered, DC-coupled matrix mixer. That means it won't load down your oscillators or CV sources, and it handles both audio and control voltages. The DC coupling lets slow LFOs and sequencer voltages pass through cleanly, so the module works as well for modulation routing as it does for audio. The buffering also helps minimize signal degradation across multiple patch points, a common problem in passive mixers. It doesn't invert signals, so polarity stays consistent. That matters when you feed CV into sensitive parameters like filter cutoff or FM index.

Twelve Knobs, Total Control

With four inputs and four outputs (three individual, plus a summed A+B+C), the AI008 has twelve dedicated potentiometers, one for each input-to-output path. That's how a matrix mixer works: no shared knobs, no menu diving, just direct physical control over every route. You can send Input A to Output 1, 2, and 3 at once, each at a different level, or use one row as a multi-output attenuator. There's no CV control, which keeps the design simple, affordable, and stable. That helps in a DIY build.

Built by You, Made in the USA

The AI008 is primarily sold as a through-hole (THT) DIY kit, so everything from resistors to pots is made for hand-soldering with no surface-mount work. The kit includes all parts needed to build the module, and the PCB is laid out to accept 9mm Alpha pots, though some panel modification may be required. Assembled units are available too, but the kit is the main way to get one. It's a hands-on introduction to active circuitry, and owners often report a deeper connection to the module because they built it themselves. It's made in the United States.

Practical Patching, Real-World Use

Once installed, the AI008 works well in patches that demand flexibility. It's good for feedback loops, such as running an oscillator's output back into its own PWM input, or building self-modulating effects chains. Users report distributing a single LFO across multiple parameters with independent attenuation, or mixing multiple sequencer voltages into evolving control signals. The summed output (A+B+C) adds another use: you can use the first three outputs for discrete routing and treat the fourth as a master mix or feedback send. One owner noted you could even run "a pair of two-channel mixes, or a three-channel mix and an attenuator," despite the fixed architecture.