Analog hardware · Open architecture
Stigmata
Dual channel tube preamplifier.
Mastering enhancer.
Precision without compromise.
Discover Stigmata
Mastering enhancer.
Precision without compromise.
● ECC82 · ECC83 Triodes
● Dual Mono / Stereo
● +225V HT Regulated
● VST Plugin
● Open Architecture
— The instrument
Not every preamp leaves marks.
The STIGMATA is a dual mono and stereo tube preamplifier and mastering enhancer. Three independent tube stages per channel. An analog signal path the digital layer controls without ever touching. Bias-driven gain. A parallel drive path. An output stage that moves between pristine linearity and full saturation at your discretion.
3
Tube stages / channel
92 dB
Max gain
0.003%
THD — output stage
— Signal architecture
Every decision, by design.
01
Bias-Controlled Gain
STIGMATA controls the ECC82 bias current directly — shaping the tube active gain and harmonics. Not merely more level. A fundamentally different character.
02
AIR Mode
Disabling the feedback loop unlocks over 14 dB of additional gain and opens the upper harmonic register.
03
Parallel ECC83 Drive Path
An independent tube path runs in parallel with Clean. Two preamps per channel — blend, substitute, or contrast.
04
SRPP Output Stage
ECC82 ultra-linear SRPP, TI precision chip — 120 dB range, 0.5 dB steps, THD below 0.003%.
05
Digital Control. Analog Audio.
The embedded processor manages gain, routing, presets, and tube health — with VST plugin integration. Signal path remains entirely analog.
— Two editions
The same soul. Different control.
Reference Edition
ALC
Analog Level Control
Purely analog path at every stage. Stepped mechanical attenuators. The digital layer reads and displays, but never intervenes in the audio.
Signal pathFully analog
TubesECC82 x4 · ECC83 x2
HT voltage+225V regulated
Max gain92 dB (Mic + AIR)
Format2U rack · 400mm
Studio Edition
ELC
Electronic Level Control
VCA-based gain control. Full parameter recall, DAW automation, channel matching to 0.01 dB. Tube character preserved intact.
Signal pathTube + VCA hybrid
Gain controlVCA · 0.01 dB
AutomationFull DAW / MIDI
HT voltage+225V regulated
Format2U rack · 400mm
— Philosophy
Built to be understood.
BEURART was founded on the conviction that great audio hardware should be transparent — not only in its sound, but in its construction. Every schematic, every design decision, every line of firmware is shared with those who build alongside us.
This is not charity. It is how we intend to build the next generation of instruments — with partners who understand what they hold in their hands.
I
Full Schematic Access
All circuit designs, PCB files, and signal path documentation available to development partners.
II
Open Firmware
The embedded firmware is shared and forkable. Partners contribute to control logic, DSP integration, and product evolution.
III
Collaborative Development
Co-authors — engineers, designers, and investors who want to define what the instrument becomes.
IV
Instruments Made Right
Hardware designed and specified for each purpose — precise, purposeful, built to last.
Horizon
Circuits designed by intelligence.
Sound shaped by human intention.
Hardware made once, made right.
Sound shaped by human intention.
Hardware made once, made right.
AI-assisted DSP · PCB design · Acoustic modeling
— Partner inquiry
We are building the right way.
STIGMATA is a working prototype with full documentation and firmware v1.02. We are now identifying the partners who will take it to production.
Romain Jagueneau — Founder
+33 6 65 20 76 71
email@beurart.com
Stigmata · Dual Mono/Stereo Tube Preamplifier · Mastering Enhancer
© 2025 BEURART · Firmware v1.02 · Open Architecture · beurart.com
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