As an electronics engineer and musician, Yann Lu manufactures at home (Belgium) analog pro audio devices since 2015. His first designs are based on famous 70s-80s American consoles reputated for pristine, natural and musical sonic features.
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Product line and prices :
PRE-2: dual channel mic/line preamp in 1U rackmount case : EUR 1200
PRE-2+: dual channel mic/line/instrument preamp in 1U rackmount case : EUR 1400
​PRE-1: mono channel mic/instrument preamp in a small tabletop enclosure : EUR 700
PRE-500: mic/instrument preamp in 500-series module : EUR 650 (DIY full kit version : EUR 350)
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​EQ-32S : 4-band + high and lowpass fully linked - stereo equalizer in 1U rackmount case : EUR 1500
EQ-32SD : 4-band + high and lowpass fully linked/dual mono - stereo equalizer in 2U rackmount case : EUR 1800
EQ-500 : 3-band semi-parametric equalizer in 500-series module : EUR 560 (DIY full kit version : EUR 290)
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All prices excl. 21% VAT and shipping
Contact me for purchasing !
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contact [A] yannluaudio.com
EQ-500 : Semi-parametric Equalizer in 500-series
Specifications
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Transformerless (not coloured, transparent, for versatile applications)
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Proportional Q
High-Pass filter : 26 Hz to 2.2 kHz (12dB/oct)
Low frequency band : 40 Hz to 800 Hz – Bell (2 widths) or Shelf mode
Mid frequency band : 400 Hz to 8 kHz – 3 bell modes :
Narrow / Standard / Wide
High frequency band : 800 Hz to 15 kHz – Bell (2 widths) or Shelf mode
Maximum 15 dB of boost/cut gain per band (center detent on 0 dB)
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Bi-color LED indicator for signal and clipping
Bypass switch on each section
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Also available in DIY full and partial kit (front panel, PCB and knobs)
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Audio samples here
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Build Guide for DIY kit here
EQ-32S : Stereo Equalizer
This unit is based on the legendary musical and warm EQ section from the console on which the bestselling Thriller's Michael Jackson album was mixed by Bruce Swedien.
This 1U rackmount aluminium case has 4 bands with a switchable shelve/bell mode for the high and the low band.
Plus high-pass and low-pass filters with bump at the cut-off frequency.
Both channels are perfectly matched and linked by a single control set (quality pots and switches).
Specifications
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4-band with proportional Q :
LOW : sweepable from 40 to 800 Hz (switchable shelve/bell)
LOW-MID : sweepable from 180 to 4000 Hz
HIGH-MID : sweepable from 360 to 8000 Hz
HIGH : sweepable from 750 to 15000 Hz (switchable shelve/bell)
Maximum 12 dB of boost/cut gain per band
Bypassable HIGH PASS & LOW PASS filters with bump at cut-off frequency
HPF : Sweepable from 25 to 3000 Hz
LPF : Sweepable from 170 to 20000 Hz
Volume control
Bypass switch
2-LED indicator (signal and clip)
Jack/XLR combo input connectors
XLR and jack output connectors
Instrument / Microphone / Line Preamp
Audio specifications (PRE2 - PRE1 - PRE500)
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Mic input :
Impedance 1200 Ω
Gain min: 0dB
Gain max: 70dB
Line input (PRE2 only):
Impedance 10 kΩ
Selectable level 0 / +4 / +6 / +8 dBu
(in-case jumpers)
Instrument input :
Impedance 200 kΩ
Sowter® transfo
Electrically balanced line outputs (no transfo)
-20dB pad switch (on mic/instr. inputs)
48V switchable phantom power
Sweepable high-pass filter (12 dB/oct)
PRE1-2: 30 Hz to 730 Hz or 2200 Hz
PRE500: 40 Hz to 730 Hz
Indicator LED (in-case trimmable threshold)
Noise level: >115dB
​​Also available in DIY full and partial kit (front panel, HiZ Sowter transfo, PCB and knobs)
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Physical specifications (PRE2)
Height 1 or 2RU
4 balanced XLR rear inputs (2x Mic In ; 2x Line In)
2 balanced XLR rear outputs (Line Out)
1 or 2 HiZ Instrument Inputs (front or rear)
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