Trio Solid State Stereo Amplifier KA-4000

Kenwood, Trio-Kenwood Inc.; Komagane

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  • Year
  • 1968 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 333524
    • alternative name: Trio Corp.
    • Brand: Jennen

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hi-Fi equipment
  • Power type and voltage
  • Alternating Current supply (AC) / 110-120; 220-240; 230-250 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 64 W (82 W max.)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Trio Solid State Stereo Amplifier KA-4000 - Kenwood, Trio-Kenwood Inc.;
  • Shape
  • Book-shelf unit.
  • Dimensions (WHD)
  • 408 x 134 x 280 mm / 16.1 x 5.3 x 11 inch
  • Notes

  • An AC mains hi-fi stereo integrated amplifier with continuous power output of 2 x 32 watts into 8 ohms (2 x 41 watts into 4 ohms). Rotary controls for Volume/Balance, Treble, Bass, rotary switches for Speaker selection, Mode/Tape Monitor, Input Selection, keys for Muting, Loudness and Filters.

    Specification  
    Continuous Power Output
    (both channel driven)    		 32+32 watts into 8Ω
    41+41 watts into 4Ω
    Total Music Power (IHF) 100 watts into 8Ω, 120 watts into 4Ω
    Power Bandwidth (IHF)  13Hz-30,000Hz
    Harmonic Distortion < 0.5% at rated output
    IM Distortion < 0.3% at rated output
    Damping Factor at 1kHz 27.5 at 8 ohms load 
    Frequency Response 20Hz-50,000Hz ±1dB
    Sensitivity  
     Phono 1, Phono 2, MIC
     Tape Head
     AUX, Tuner, Tape Play
     Main Amp. Input    		 2 mV
    2.3 mV
    200 mV
    100 mV
    Input Impedance (at 1kHz)  
     Phono 1, Phono 2
     Tape Head, MIC
     AUX, Tuner, Tape Play
     Main Amp Input    		 50kΩ
    100kΩ
    100kΩ
    300kΩ 
    S/N Ratio (below rated output)  
     Phono 1, Phono 2
     Tape Head
     MIC
     AUX, Tuner, Tape Play    		 65dB
    63dB
    67dB
    77dB

    Inputs :
    Phono 1, Phono 2, Tape Head, AUX, Tuner, Tape Play, MIC and Main Amp.

    Outputs :
    2 pairs of Stereo Speaker Outputs (4-16Ω), Pre-amp Outputs, Headphone Jack,
    Low level Mono output, Tape Recording outputs, DIN Tape Rec/Play Connector,
    Switched and unswitched AC Outlets.

    Versions/Power requirements

    USA, Canada 110-120V AC 50/60Hz
    PX, General export 110-120V/220-240V AC 50/60Hz
    South Africa 230-250V AC 50/60Hz
    Australia 230-250V AC 50/60Hz
    Europe  220-240V AC 50/60Hz
    Europe  110-120V/220-240V AC 50/60Hz

    Power Consumption : 180 watts at full power.

    Same as the Kenwood KA-4000 Solid State Stereo Amplifier.

  • Net weight (2.2 lb = 1 kg)
  • 8 kg / 17 lb 9.9 oz (17.621 lb)
  • Mentioned in
  • - - Manufacturers Literature (Trio KA-4000 Brochure)
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Kenwood KA-4000 Service Manual)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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