Quad 77 Preamplifier 7741

Quad (Brand); Acoustical Manufacturing Co. Ltd.; Huntingdon

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  • Year
  • 1997 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 317757

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Remote Control (with wire or wireless)
  • Power type and voltage
  • Alternating Current supply (AC) / 100; 110-120; 220-240 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Quad 77 Preamplifier 7741 - Quad Brand; Acoustical
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 321 x 65 x 300 mm / 12.6 x 2.6 x 11.8 inch
  • Notes

  • A stereo hi-fi preamplifier available in a nextel or carbon finish for use with the matching Quad 77 Power Amplifier or Quad 707 Power Amplifier.  Remote control operation is via the Quad 77 System Console which will also operate all Quad 77 Series system components. It is the heart of a Quad 77 Series system and can be connected to up to 32 Quad 77 source components via Quad's 'Quadlink Bus' using Quadlink connections. The Quadlink Bus handles power (30V AC for other Quad 77 components), Signal and Control functions. As well as a Quadlink system connector and an Ampbus connector for connection to the power amplifier, there are three Auxiliary phono input sockets with adjustable input sensitivities for other source components, phono inputs for tape and for MM or MC cartridge, phono output sockets for tape and for Pre-amp Out for connection to a non Quad 77 Series power amplifier. With an MM/MC selector switch, an unswitched AC outlet and a jack for recharging the 77 System Console battery.

    Features
    • Quad-link bus — up to 32 bus sources can be connected.
    • 3 auxiliary inputs and tape loop.
    • Moving magnet and moving coil phono input.
    • Adjustable input sensitivity.
    • Tone control, tilt, bass boost & cut, and filter.

    Specification  
    INPUTS  
    Aux 1, 2 & 3 Input Sensitivity 100, 300 or 775mV
    Signal/Noise >97dBa(A) (ref. 775mV)
    Distortion <0.003%
    Tape Input Sensitivity 100, 300 or 775mV
    Signal/Noise >97dBa(A) (ref. 775mV)
    Distortion <0.003%
    Phono MC Input Sensitivity 100, 300 or 775µV
    Signal/Noise >78dBa(A) (ref. 775µV)
    Distortion <0.01%
    Phono MM Input Sensitivity 1, 3 or 7.75mV
    Signal/Noise >78dBa(A) (ref. 7.75mV)
    Distortion <0.005%
    OUTPUTS Note: Dependent on sensitivity setting
      Preamp-out Output Level 775 mV
    Max. output level 3.3 V
    Source Impedance 100Ω
      77 AMPBUS Max. output level 8V
    Source Impedance 20Ω
      Tape-out Output Level 100mV/300mV/775mV
    Max. output level 10V
    Source Impedance 330Ω
    Frequency Response  
      Aux 1,2,3/Tape/Quad-link 10Hz - 20KHz +0dB/-0.3dB
    3Hz - 56KHz +0dB/-3dB
      Phono (MM/MC) 20Hz - 20KHz +/-0.5dB
    7Hz - 53KHz +0.5dB/-3dB
    Interchannel Balance +/-0.1dB with volume control
    varied from maximum to -70 dB

    Power Requirements
    100 or 110-120 or 220-240V AC 50/60Hz

  • Net weight (2.2 lb = 1 kg)
  • 4.3 kg / 9 lb 7.5 oz (9.471 lb)
  • Mentioned in
  • Gramophone magazine Jul 1997 Quad 77 Tuner, Preamplifier, Power Amplifier review
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Quad 77 Preamplifier & 77 System Console Instruction Book)
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Quad 77 Pre-Amplifier Features and Specification brochure)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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