• Country
• Japan

• Manufacturer / Brand
• Hitachi Ltd.; Tokyo

• Year
• 1979 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 149986

• • alternative name: Hitachi Sales Corp. of America

Click on the schematic thumbnail to request the schematic as a free document.

• 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; 220 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 140 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Stereo Amplifier HA-7700 - Hitachi Ltd.; Tokyo

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 435 x 165 x 383 mm / 17.1 x 6.5 x 15.1 inch

• Notes
• Stereo-Vollverstärker mit 2 x 70 Watt Sinus an 8 Ohm. Gesamtklirrfaktor: 0,02%
  MosFet Transistoren, Doppel-Mono Aufbau.
  Farbe Silber.

• Net weight (2.2 lb = 1 kg)
• 16 kg / 35 lb 3.9 oz (35.242 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 1052 models, 942 with images and 241 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hitachi Ltd.; Tokyo