
Perreaux 
Model: 
SA33 
Date of Manufacture: 
Product Type: 
Stereo Preamplifier
1987
info@perreaux.com  www.perreaux.com 

Specifications: 
Frequency Response 
Tone controls bypassed....... 20Hz-50kHz, ±0.25dB 
Input Sensitivity 
High Gain (moving coil)............ 280μV
Low Gain (moving magnet)....... 2.2mV
CD and VCR............................................360mV
All other inputs ........................................120mV
Input Impedance 
High Gain (moving coil).............47Ω, 100Ω, 47kΩ 
Low Gain (moving magnet)........47Ω, 100Ω, 47kΩ 
CD and VCR...................................................20kΩ 
All other inputs ...............................................25kΩ 
Input Overload 
High gain..................................... 20mV
Low gain ................................... 160mV
CD and VCR.................................................20V
All other inputs .............................................10V
Rated Output............... 1.5V
Maximum Output ........20V
 into 10kΩ or higher 
rms
 into 10kΩ or higher 
rms
Main Output 
Source Impedance.............................................1kΩ 
Tape Output 
Level ............................................................120mV 
Source Impedance.............................................2kΩ 
Loop Output 
Level ............................................................105mV 
Source Impedance.............................................2kΩ 
;
 Schematic diagram 
:
 Product manual
 @ 1kHz 
rms
 @ 1kHz 
rms
 @ 1kHz 
rms
 @ 1kHz 
rms
rms
rms
rms
rms
Minimum Recommended Load..................... 10kΩ 
Distortion (THD and IMD) 
Phono inputs ............................0.01% 20Hz-20kHz 
All others ............................< 0.009% 20Hz-20kHz 
Rising to 0.08% at 15V @ 1kHz into 10kΩ or higher 
Noise (inputs loaded) 
Moving Coil (unweighted).......-55dB re rated input 
Moving Coil (A weighted) .......-68dB re rated input 
Moving Magnet .................... -81dB re 10mV input 
Moving Magnet (unweighted) .-68dB re rated input 
Moving Magnet (A weighted)..-78dB re rated input 
All others (unweighted) .........-98dB re rated inputs 
All others (A weighted)........ -109dB re rated inputs 
RIAA Accuracy.......................................... ±0.25dB 
Channel Separation 
All inputs .................................. 50dB 20Hz-20kHz 
Phase Accuracy ............................ ±3° 20Hz-20kHz 
Tone Switch 
When set to bypass, the tone control circuitry is 
completely removed from the signal path, leaving 
the signal to pass directly to the line amp stage. 
Bass .................................................. ±18dB at 30Hz 
Treble ............................................. ±14dB at 12kHz 
Dimensions 
Width .............................................. 482mm (19.0”) 
Height ................................................. 55mm (2.5”) 
Depth............................................... 347mm (13.6”) 
Weight.............................................. 4.8kg (10.5lbs)
info@perreaux.com  www.perreaux.com