Kenwood KA-9077

Data

General

• Manufacturer: Kenwood
• Model: KA-9077
• Type: Stereo integrated amplifier
• Years of manufacture: 1979 - 1981
• Made in: Japan
• Color: Gray metallic, variants Kenwood KA-907 in silver, Trio KA-9900 Japan execution
• Power consumption: 1000 W at full power
• Dimensions (WxHxD): 460 x 161 x 463 mm
• Weight: 25.8 kg
• Original price approx.: 2'798 DM
• New price D-90 handles: 200 DM

Connections

• Number of inputs:
  • Input sensitivity:
  • Phono 1 MM: 2.5mV, 33 kOhm, 47 kOhm, 100 kOhm, max 230mV RMS (1Khz, 0.01% THD).
  • Phono 1 MC: 0.1mV, 100 Ohm, max. 9mV RMS (1Khz, 0.01% THD)
  • Phono 2 MM: 2.5mV, 47 kOhm, 47 kOhm, 100 kOhm, max. 230mV RMS (1Khz, 0.01% THD)
  • Tuner: 150mV, 50 kOhm
  • AUX 1,2: 150mV, 50 kOhm
  • Tape Play A, B: 150mV, 50 kOhm
  • Main In: 1V / 50kOhm
• Number of Outputs:
  • Outputs:
  • Tape Rec: 150mV, 180 Ohm

DIN: 30mV / 80 Ohm

• • Pre Out: 9V max. / 750 Ohm
  • Headphones
  • 2 pairs of speakers

Technical Data

• Continuous power (at THD)
  • 8 Ohm: 2x 150W (RMS, 20 Hz - 20 kHz, 0.01% THD), 2x 150W (1Khz)
  • 4 Ohm: 2x 180W (1Khz)
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion:
  • Phono: 0.01% (rated power, volume at -20dB).
  • Phono IMD: 0.0045% (nominal power, 8 Ohm)

High Level: 0.01% (nominal power, 20Hz - 20kHz, 8 Ohm)

• • High Level: 0.006% (1/2 nominal power, 20Hz - 20Khz, 8 Ohm)
• Attenuation Factor: 100 (DC - 20Khz, 8 Ohm)
• Frequency Response:
  • DC - 400 kHz (+0 / -3dB, DC ON).
  • 1Hz - 400kHz (+0 / -3dB, DC OFF)
  • 20Hz - 20kHz (RIAA, ±0.2dB)
• Power bandwidth: 5Hz - 100Khz (0.03% THD), -70dB (DIN 45500)
• Signal-to-noise ratio:
  • Phono 1, 2 MM: 90dB at 2.5mV
  • Phono 1, 2 MM: 96dB at 5,0mV
  • Phono 1, 2 MM: 102dB at 10mV
  • Phono 2 MC: 70dB at 0,1mV
  • Phono 2 MC: 76dB at 0.2mV
  • Phono 2 MC: 105dB at 150mV
  • Tuner, AUX, Tape, A, B: 105dB for 150mV input
• Rise Time: 0.5 to 0.8 µS
• Slew Rate: ± 230V/µS
• Tone Control
  • Bass:
    • 150Hz : ± 7.5dB at 75Hz, ±10dB at 25Hz.
    • 400Hz : ± 7.5dB at 155Hz, ±10dB at 50Hz.

Treble:

• • • 3Khz : ± 7.5dB at 10kHz, ±10dB at 20kHz
    • 6Khz : ± 7.5dB at 20kHz, ±10dB at 40kHz

Loudness : +3 / +6 / +9dB at 30Hz or 100Hz

• High Filter : 12dB / octave above 8Khz
• Subsonic Filter : 6dB / octave below 18Hz

Special Features

• Pre- / power stage separable

Remarks

• Other models in the same series:
• Amplifier:
• Kenwood KA-5011
• Kenwood KA-6011
• Kenwood KA-7011
• Kenwood KA-8011
• Kenwood KA-9077

• Tuner
• Kenwood KT-6155
• Kenwood KT-8155
• Kenwood KT-9177

Pictures

• Picture: Kenwood KA-9077, KT-9077

Reviews

• Audio Test attested true 202+202 watts into 8 ohms and 308+308 watts into 4 ohms.

• Review from "Hifi Studio": [1]

• Report from "Mackers": [2]

• Report from "Good Old Hifi": [3]

Links

• External link to website "Hifi Archive": [4]

• External link on website "The Vintage Knob": [5]