Who we are



The people behind the project

La Spezia, Italy
Claudio Furno
Audio Engineer · Electronics Designer

With decades of experience in electronics and audio engineering, Claudio is the technical heart of FCPRO.AUDIO. He designs the circuits, builds every unit by hand in the laboratory in Bolano, La Spezia, and has been shaping sound since 1977 — when he built his first mixer in his father's workshop.

Berlin, Germany
Francesco Passantino
DJ · Producer · Sound Designer

DJ and producer since 1996, Francesco brings decades of hands-on music experience to every Mixthesizer product. He works alongside Claudio to conceive and develop each tool — thinking about what musicians actually need on stage and in the studio. Based in Berlin, he runs the Berliner Vinylwerk and maintains a direct connection with artists and the European community.

Every Mixthesizer product is born from a shared creative process — Claudio and Francesco think through each tool together, combining engineering precision with real-world performance experience. Circuit design and assembly happen in La Spezia; product vision and artist feedback come from Berlin.


A project with roots in 1977

1977
Claudio builds his first mixer in his father's electronics workshop in La Spezia. The beginning of a lifelong dedication to sound.
FCPRO
FCPRO.AUDIO is founded — a laboratory dedicated to custom mixers, amplifiers, and compressors for musicians and audio professionals worldwide.
MXT
Mixthesizer is born — a brand created specifically for musicians who perform with synthesizers and analog instruments, combining decades of engineering experience with a new vision for live performance tools.

Mixthesizer Logo

Mixthesizer was born inside FCPRO.AUDIO as a brand dedicated to musicians who perform with synthesizers and analog instruments. Every product is designed for artists who want full control over their sound — on stage, in the studio, and everywhere in between.


Italy & Germany

Italy
La Spezia
The FCPRO.AUDIO laboratory where every Mixthesizer product is designed, built by hand, and individually tested before shipment.
Germany
Berlin
The Berliner Vinylwerk — Francesco's studio and a gathering point for the analog music community. A place where Mixthesizer products live and work every day.

The full Mixthesizer lineup

10 products, 3 families — all designed and built by hand at FCPRO.AUDIO.

10
Products
100%
Analog
1977
Since

Family 01

Performance, Live & Routing

Stage & Studio
Mixthesizer Live Tools
Analog mixer · 5 devices in one
The flagship. 8-channel fully analog mixer combining five professional audio devices in one compact unit — built for live performance, jam sessions, and Eurorack systems.
8-channel mixer — MUTE & PFL on every channel 3-band master isolator — 24 dB, RK27 potentiometers Active DI box with custom transformers 3 simultaneous outputs — TRS, XLR, Utility
€1.200 / unit
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ISOX
Stereo analog isolator — Dual Mono 3-band EQ
Precision analog isolator with fully independent L/R signal paths. Active 3-band EQ, XLR and RCA, Earth Lift.
Dual Mono — fully independent L/R Active LOW / MID / HIGH bands Solid 42mm knobs — RK27 potentiometers PHONO input option available
€490
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SUMPRESSOR
Analog summing master compressor
The final stage in your audio chain. Compressor, summing mixer, active DI, and utility output in one unit.
4 stereo inputs — balanced XLR output 4 presets + user mode Sidechain filter — 200 / 120 / 90 / 60 Hz Mixer Mode — summing without compression
€1.200
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Play 8 Tools
8-channel audio selector with preamplifier
Connect up to 8 instruments and select one at a time. Analog preamp, DI output, MIDI and footswitch control.
8 balanced TRS inputs — mono or stereo Selection via encoder, MIDI, or footswitch PFL IN/OUT — share headphones with Live Tools LED level meter
€600
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Mixthesizer Matrix
100% analog audio routing system
Route any input to one or more outputs with independent level control. From 4×4 up to 16×16. Perfect for live rigs and studio setups alike.
4×4 base — up to 16×16 16 potentiometers per module Mono / Stereo via DIP switches 6.3mm TRS · ±15V XLR 5-pin power
from €500
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Family 02

Studio

For the studio
Mixthesizer Studio HUB
2-in-1 analog control center — 8 to 128 channels
Synth-level mixer and DAW summing mixer in one scalable rack system. Master/Slave architecture, CAT-SYNTH 8 ready.
SYN / DAW switch on every channel Per-channel SIG and OVER LED metering TRS or DB25 synth inputs on rear panel Expandable — 1 Master + up to 7 Slave units
from €1.600 / 8ch
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Pure Route 22
Full balanced passive monitor controller
100% passive, zero coloration. 2 balanced inputs, 2 balanced outputs combinable. No power required.
100% passive — no power supply needed DIM switch — −20 dB attenuation Neutrik XLR connectors throughout Custom configs up to 4 in / 4 out
€490
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Family 03

Infrastructure

Power & Cases
EUROBUS KIT
Power & distribution system for Eurorack
Complete expandable power system. From a single bus board to a full case with 4× Eurobus 10. Dual fuse protection and status LEDs.
1× to 4× Eurobus 10 configurations Complete case option — plug and play PSU + power module + cables included
from €125
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PICCOLO
Compact Eurorack case — integrated EUROBUS 10
Travel-ready Eurorack case for up to 10 modules. Daisy-chain up to 4 units from a single PSU. Fits in carry-on luggage.
Up to 10 modules per case Daisy-chain — up to 4 units, single PSU Carry-on compatible format
from €230
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