Audio Database

Image of SA-50A
Commentary

A stereo pre-main amplifier developed to enjoy component stereo at an affordable price.

The power amplifier section uses a quasi complimentary service SEPP circuit.

Equipped with two Phono and two Tape Rec/Mon connectors.
There are also two speaker outputs.

Tone control is an 11-step quick-stop type.

Model Rating
Type Stereo pre-main amplifier
Circuit system Quasi complimentary service SEPP method
Music Power (IHF) 44W (4 Ω)
36W (8 Ω)
Effective output (1 kHz)
Single-ch drive : 16W/16W (4 Ω)
13W/13W (8 Ω)
Both channel drive : 12W + 12W (4 Ω)
10W + 10W (8 Ω)
Harmonic distortion factor 0.5% or Less (Effective Output)
Cross modulation distortion factor 0.7% or Less (Effective Output)
Output Bandwidth (IHF) 20 Hz to 40 kHz
Frequency characteristic 30 Hz to 50 kHz + 1 -2dB
Load impedance 4 Ω ~ 16 Ω
Damping factor 40 or More (8 Ω, 1 kHz)
Input Sensitivity / Impedance
(1 kHz at effective output)
Phono1, 2 : 2.3mV/50k Ω
Tuner, AUX, Tape Mon1, 2 : 200mV/100k Ω
Recorded output Tape Rec (pin jack) 1, 2 : 200 mv
Tape Rec : 30 mV
Tone Control (3 dB step) Bass : 100 Hz, -11dB to + 12 dB
Treble : 10 kHz, -10dB to + 9.5 dB
Loudness (Volume -40dB) 100Hz:+10dB
10kHz:+5.5dB
Hum, noise Phono : 75 dB or more
AUX : 90 dB or more
<General>
Power consumption Rating : 40W
Maximum : 75W
External dimensions Width 330x Height 118x Depth 316 mm
Weight 5.5kg