Sansui QS-1. Vintaje Retro Classic Quadrophonic Hi-Fi Class Solid Audio Preamplifier. Made In Japan

Type 4-channel synthesizer
Input Sensitivity / Impedance Rated input: 130mV/50k Ω (2 ch)
Minimum Input: 90 mv (2 ch)
Tape Monitor 2 ch: 130mV/50k Ω
4 ch: 775mV/50k Ω
Output level
Rated power (0 VU) Low output:130mV (4ch)
High output:430mV (4ch)
Maximum power output Low output:1V (4ch)
High output:3.5V (4ch)
Recorded output 130mV (2ch)
775mV (4ch)
Frequency characteristic Front: 20 Hz to 20 kHz 1 dB
Rear solo: -10dB (10 kHz)
Concert Hall 1: 20 Hz to 20 kHz + 1 -2dB
Concert Hall 2: Right + 6 dB at 50 Hz, Left + 6 dB at 10 kHz
Surround: + 6 dB at 50 Hz
Synthesizer circuit Sansui QS matrix method and phase modulation method
Rear channel phase modulation Maximum 180 ° (10 kHz, Sun Sui Phase Modulation Method)
Semiconductor used Transistor: 20 Nos.
SNR: 112db
IC: 8 Nos.
Diode: 12 pcs
Zener diode: 1 unit
Power supply voltage 100 VAC, 50Hz/60Hz
External dimensions Width 395x Height 127x Depth 278 mm
Weight 5.5kg

Made In Japan