ESC
SA-7500

SA-7500

BrandPioneer
FunctionAmplifier, Integrated
Produced1976
CountryJapan
Form FactorStandard Width
Signal PathAnalog Hardware
Dimensions420 x 150 x 345mm
Weight12kg
PowerAC 120V 60Hz or 220V 50/60 Hz or 110,120, 130, 220 and 240V (switchable) 50/60 Hz
Frequency Response10Hz to 80kHz
AccessoriesConnecting cord with pin plugs
Circuitry1-stage differencial amplifiers direct-coupled OCL
Circuitry (Preamplifier section)2-stage direct-coupled with 1 FET, NFB type (Control amplifier)
Circuitry (Preamplifier section)3-stage direct-coupled amplifier (Equalizer amplifier)
Continuous power output, 20 Hz to 20kHz (both channels driven)45 watts per channel (4 ohms)
Continuous power output,1000 Herts (both channels driven)40 watts per channel (8 ohms)
Continuous power output,1000 Herts (both channels driven)50 watts per channel (4 ohms)
Continuous power output (1000 Hz) (both channels driven)45 watts per channel (8 ohms)
Damping factor (20 herz to 20kHz, 8 ohms)25
Frequency response30Hz to 15kHz (Phono (RIAA equalization))
Frequency response10Hz to 50kHz (Tuner, Aux, Tape play)
High filter8kHz (6dB/oct)
Hum and noise (IHF, short circuited A network)100dB
Hum and noise (IHF, short circuited A network)65dB (Micro)
Hum and noise (IHF, short circuited A network)70dB (Phono 1, Phono 2)
Hum and noise (IHF, short circuited A network)90dB (Tuner, Aux, Tape PB)
Input sensitivity1v/50kΩ (Power amp in)
Input sensitivity / Impedance150mV/50kΩ (Aux, Tape PB 1, Tape PB 2, Tape PB 2 (Din), Tuner)
Input sensitivity / Impedance7.5mV/85kΩ (Micro)
Input sensitivity / Impedance2.5mV/50kΩ (Phono 1, Phono 2)
Intermodulation Distortion< 0.3% (Continuous rated power output)
Intermodulation Distortion< 0.05% (1 watt per channel power output, 8 ohms)
Intermodulation Distortion< 0.05% (20 watts per channel power output, 8 ohms)
Loudness contour+8.5dB (100Hz), +4dB (10kHz) (Volume control set at -40dB position)
Low filter30Hz (6dB/oct)
Output level / Impedance1V / 1kΩ (Pre out)
Output level150mV (Tape Rec 1)
Output level150mV (Tape Rec 2)
Output level / Impedance30mV / 80kΩ (Tape Rec 2 (Din))
Phono Overload level (THD.0.1%)200mV (1kHz) (Phono 1, Phono 2)
Power consumption190 W
Semiconductors:2 x FET(s), 35 x transistors, 21 x diodes
Tone control (Bass)+-7dB (100Hz) / +-11dB (100Hz) (Turnover frequency 200 Hz / 400 Hz)
Tone control (Treble)+-6dB, by 2dB step (2kHz) (Turnover frequency 5kHz / 2.5kHz)
Total Harmonic Distortion from 20Hz to 20kHz< 0.3% (Continuous rated power output)
Total Harmonic Distortion from 20Hz to 20kHz< 0.05% (1 watt per channel power output, 8 ohms)
Total Harmonic Distortion from 20Hz to 20kHz< 0.05% (20 watts per channel power output, 8 ohms)
Channels2 Channel
Connections
  • Aux · RCA (Phono, Cinch) · Socket (Female), Stereo
  • GND 1 · Binding Post
  • GND 2 · Binding Post
  • Headphone · 1/4" Phone Jack (6.35mm) · Socket (Female), Stereo
  • Microphone · 1/4" Phone Jack (6.35mm) · Socket (Female), Stereo
  • Phono 1 · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Phono 2 · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Speakers (A) · Binding Post · Stereo
  • Speakers (B) · Binding Post · Stereo
  • Tuner · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 1 (PB) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 1 (rec) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 2 (PB) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 2 (rec) · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Tape 2 (rec/PB) · DIN · Socket (Female), Stereo
Controls
  • Balance · Rotary Pot
  • Bass · Rotary Pot
  • Bass Turn Over Switch · Rotary Pot with Switch · 200Hz, 400Hz
  • Function (source) · Rotary Pot with Switch · Phono1 / Mic/Phono2 / Tuner / Aux
  • Loudness · Toggle Switch
  • Mode · Rotary Pot with Switch · Stereo Rev / Stereo Norm / Mono L+R / Mono L / Mono R
  • Muting · Toggle Switch · -20dB
  • Power · Toggle Switch
  • Speakers · Rotary Switch · Off / A / B / A+B
  • Tape Monitor · Toggle Switch · 1 / Source / 2
  • Tape 1 Monitor · Toggle Switch
  • Tape 2 Monitor · Toggle Switch
  • Tape Duplicate · Toggle Switch · On / Off
  • Tone · Toggle Switch · On / Off
  • Treble · Rotary Pot
  • Treble Turn Over Switch · Rotary Pot with Switch · 2.5kHz, 5kHz
  • Volume · Rotary Pot