ESC
SA-9900

SA-9900

BrandPioneer
FunctionAmplifier, Power
Produced1976
CountryJapan
Form FactorStandard Width
Signal PathAnalog Hardware
Dimensions420 x 165 x 403mm
Weight20kg
Frequency Response7Hz to 40kHz
AccessoriesHex. Wrench (used for fasting volume knob)
Attenuator0,-15dB, -30dB
Circuitry2-stage differencial amplifiers. 3-stage Darlington parallel push-pull, pure-complementary OCL.
Circuitry (Preamplifier section)3-stage direct-coupled type with 1st stage FET equiped differential amplifier. (Control amplifier)
Circuitry (Preamplifier section)3-stage direct-coupled class-A SEPP type with 1st stage FET equiped differential amplifier. (Equalizer amplifier)
Continuous RMS Power Output, 10Hz to 20kHz (both channels driven)110 watts per channel (4 ohms)
Continuous Power Output,1KHz (both channels driven)120 watts per channel (4 ohms)
Continuous Power Output,1KHz (both channels driven)120 watts per channel (8 ohms)
Damping factor>30 ((20 herz to 20kHz, 8 ohms))
Filter (High)8kHz, 12kHz (12dB/oct)
Filter (Low)15Hz, 30Hz (12dB/oct)
Frequency response30Hz~15kHz (Phono (RIAA equalization))
Frequency response7Hz~40kHz (Tuner, Aux, Tape PB)
Hum and noise (IHF, short-circuited, A network)>110dB
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)>95dB (Tuner, Aux, Tape PB)
Input sensitivity1v/50k ohms (Power amp in)
Input sensitivity / Impedance150mV/50kΩ (Aux 1, Aux 2, Tuner, Tape PB 1&2)
Input sensitivity / Impedance2.5mV/50kΩ (Phono 1)
Input sensitivity / Impedance2.5mV~10mV/35kΩ, 50kΩ, 70kΩs, 100kΩ (Phono 2)
Intermodulation Distortion< 0.1% (Continuous rated power output)
Intermodulation Distortion< 0.04% (1 watt per channel power output, 8 ohms)
Intermodulation Distortion< 0.04% (55 watts per channel power output, 8 ohms)
Input sensitivity / Impedance1V/50k (Power Amp In)
Input sensitivity / Impedance6mV~24MV/85k ohms (Micro)
Input sensitivity / Impedance150mV/50k ohms (Aux 1, Aux 2, Micro, Tape PB 1&2, Tuner)
OutputHeadphone (4Ω~16Ω)
OutputSpeakers (A, B (4Ω~16Ω))
OutputSpeakers (A+B (8Ω~16Ω))
Output level / Impedance2V/1k ohms (Pre out)
Output level / Impedance150mV (Tape Rec 1&2)
Phono Overload level (T.H.D.0.01%)500mV (1kHz) (Phono 1)
Phono Overload level (T.H.D.0.01%)500mV~1.0V (1kHz) (Phono 2)
Power Bandwith Distirtion (IHF, Both Channels Driven)5Hz~40KHz (THD 0.1%)
Power consumption500W
Power Output (per channel)110 W ((8Ω))
Semiconductors10 x FET(s), 74 x transistors, 33 x diodes
Tone control (1.5dB step) (Bass)SUB +-4.5B (50Hz) / MAIN 7.5dB (100Hz)
Tone control (1.5dB step) (Treble)SUB +-4.5B (20kHz) / MAIN 7.5dB (10kHz)
Total Harmonic Distortion from 20Hz to 20kHz< 0.1% (Continuous rated power output)
Total Harmonic Distortion from 20Hz to 20kHz< 0.04% (1 watt per channel power output, 8 ohms)
Total Harmonic Distortion from 20Hz to 20kHz< 0.04% (55 watts per channel power output, 8 ohms)
Channels2 Channel
Connections
  • Aux 1 · RCA (Phono, Cinch) · Socket (Female), Stereo
  • Aux 2 · 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
  • AC Outlet 1 (Unswitched, 100W max) · Other
  • AC Outlet 2 (Switched, 100W max 2&3) · Other
  • AC Outlet 3 (Switched, 100W max 2&3) · Other
Controls
  • Attenuator · Toggle Switch · 0dB, -15dB, -30DB
  • Balance · Rotary Pot
  • Bass Twin Control 1 · Rotary Pot · 50Hz
  • Bass Twin Control 2 · Rotary Pot · 100Hz
  • Filter (High) · Toggle Switch · 12kHz / Off / 8kHz
  • Filter (Low) · Toggle Switch · 15Hz / Off / 30Hz
  • Function (source) · Rotary Pot with Switch · Phono1 / Mic/Phono2 / Tuner / Aux1 / Aux 2
  • Mode · Rotary Pot with Switch · Stereo Rev / Stereo Norm / Mono L+R / Mono L / Mono R
  • Phono 2 Impedance (Rear panel) · Rotary Pot with Switch · 35 / 50 / 70 / 100KΩ
  • Phono 2/MIC Level Control (Rear panel) · Rotary Pot · -12dB~0dB
  • Power · Latching Push Switch
  • Pre / Power Amp switch (Rear panel) · Toggle Switch · Normal / Separated
  • Speakers · Rotary Switch · Off / A / B / A+B
  • Tone · Toggle Switch · On / Off
  • Treble Twin Control 1 · Rotary Pot · 10kHz
  • Treble Twin Control 2 · Rotary Pot · 20kHz
  • Volume · Rotary Pot
  • Tape Monitor · Toggle Switch · 1 / Source / 2
  • Tape Duplicate · Toggle Switch · On / Off