Sansui QA-7000

Data

General

  • Manufacturer: Sansui
  • Model: QA-7000
  • Type: Quadrophonic / Stereo integrated amplifier
  • Made in: Japan
  • Color: Black
  • Construction period: 1973 - 1976
  • Power consumption: 340 W
  • Dimensions: (WxHxD) 440 x 140 x 322 mm.
  • Weight: 14 kg
  • Original price approx.: 137'000 Yen (Japan, 1973), 550 US-$, 2'850 DM


Connections

  • Number of inputs:
    • Phono 1 & 2: 2.5 mV, 50 kOhm.

2-channel tape deck RCA: 100 mV, 50 kOhm 2-channel tape deck DIN socket: 100 mV, 50 kOhm

    • 4-channel tuner: 100 mV, 50 kOhm
    • 4-channel Aux 1 & 2: 100 mV, 50 kOhm
    • 4-channel tape deck 1 & 2: 100 mV, 50 kOhm
    • Power amp input: 800 mV, 50 kOhm
  • Number of outputs:
    • Tape Deck RCA: 100 mV, 2 kOhm
    • Tape Deck DIN: 30 mV, 65 kOhm
    • Preamp output: 800 mV, 600 Ohm (Max. level: 6.5 V at <0.5% THD)
    • Terminals for 4 speakers


Technical Data

  • Continuous power (at THD)
    • 8 Ohm: 4 x 15 W

8 Ohm BTL: 2 x 40 W

  • Dynamic power
    • 4 Ohm: 108 W
    • 4 Ohm BTL: 160 W
  • Total harmonic distortion: < 0.1%
  • Attenuation factor: 100 at 8 Ohm
  • Overall frequency response: 10 - 30'000 Hz
  • Signal to noise ratio:
    • Phono 1 & 2: >70 dB
    • Tuner: >80 dB

Aux: >80 dB

    • Power Amplifier Input: >90 dB
  • Tone control:
    • Bass: ± 15 dB

Treble: ± 15 dB


Special Features

  • Switchable 2-channel or 4-channel operation:
    • 4-channel function QS Synthesizer:
      • Reverb

Surround

    • 4-channel function QS Regular Matrix:
      • Reverb
      • Surround
    • 4-channel Phase Matrix
    • 4-channel discrete
  • 1 Tape connection according to DIN
  • Low Filter
  • High Filter
  • Loudness: + 8 dB at 50 Hz, + 3 dB at 10 kHz
  • Muting: - 20 dB
  • 4-channel pre- and power amplifier can be separated
  • Connections for 4 speakers


Notes




  • This model was also available in Japan as the QSC-9050 without a power amplifier. See also:
    • Sansui QSC-9050 [1]


Pictures

  • Image: Sansui QA-7000

Sansui QA-7000-2.JPG

  • Picture: Sansui QA-7000 interior view

Sansui QA-7000-11.jpg

  • Image: Sansui QA-7000 rear view

Sansui QA-7000-10.jpg

  • Image: Sansui QA-7000 original instruction manual for operation

Sansui QA-7000-Specs-2.jpg


Reports

  • External Link: "Stereo Raven" restoration report: [3]


Links

  • External link: "Hifi Archive" website: [4]
  • External Link: "Audio Database" website: [5]
  • External link: "Audio Heritage, Japan" website: [6]