Hitachi HA-7700

Data

General

• Manufacturer: Hitachi
• Model: HA 7700
• Type: Integrated amplifier
• Years of manufacture: 1979 - 1981
• Made in: Japan
• Color: Silver
• Remote control: No
• Power consumption: 460 watts
• Dimensions (WxHxD): 435 x 164.5 x 383 mm
• Weight: 16 kg
• Original price approx.: 1'198 DM

Connections

• Number of inputs:
  • Phono MM: 2.5 mV / 47 kOhm, 250 mV max.

Phono MC: 0.25 mV / 100 Ohm, 25 mV max. Tuner: 150 mV / 47 kOhm Aux: 150 mV / 47 kOhm

• • Tape Play 1, 2: 150 mV / 47 kOhm
  • Tape Play DIN 1, 2:
• Number of outputs:
  • Tape Rec 1, 2: 150 mV / 47 kOhm
  • Tape Rec DIN 1, 2:
  • Headphones
  • 2 pairs of loudspeakers

Technical Data

• Continuous power (at distortion factor)

8 Ohm: 2x 65 W at 0.02

• • 4 Ohm:
• Dynamic power
  • 8 Ohm:
  • 4 Ohm:
• Total harmonic distortion: 0.02%
• Intermodulation distortion: 0.03%
• Attenuation factor: 50
• Frequency Response:
  • Phono RIAA: ± 0.3 dB, 20 - 20'000 Hz
  • High level: 10 - 40'000 Hz
• Signal-to-noise ratio:
  • Phono: 80 dB
  • High level: 100 dB
• Tone control:
  • Bass: ± 8 dB at 100 Hz

Treble: ± 8 dB at 10 KHz

• Loudness: No
• High Filter: No
• Low Filter (Subsonic): 15 Hz, - 6 dB / octave
• Mute: - 16 dB
• Direct/Line-Straight: Yes

Special Features

• MosFet transistors
• Double-Mono Construction

Remarks

• Other models in the same series:
• Hitachi HA-2700
• Hitachi HA-3700
• Hitachi HA-4700
• Hitachi HA-5700
• Hitachi HA-7700
• Hitachi HA-8700

Pictures

• Image: Hitachi HA-7700

• Excerpt from brochure: Hitachi HA-7700, HA-8700

• Extract from brochure: Hitachi HA-7700

Tests

• Stereoplay April 1981 9 amplifiers in comparison

Reports

• [Listening test by a user of the Hifi Forum]