Hitachi HMA-8300 specifications

Brand : Hitachi

General

connectors

Tech nical data

special features

image is Made of hadieho from Wolfsburg

manufacturer: Hitachi
model: HMA-8300
type: power amplifier, Class G, bipolar power transistors
year of construction: 1976 - 1979
in Japan
color: Black
remote control: no
power consumption:
- 1470 W (220 V - 240 V~ 4 Ohm )
- 1100 W (220 V - 240 V~ 8 Ohm )
- 1020 W (at 120 V~)
dimensions: 435 (W) x 182 (H) x 404 (d) mm
weight: 24 kg
factory price approx.: 2.000,- DM

the duration of the performance (total harmonic distortion)
- 8 Ohm s: 200 W + 200 W (20 Hz - 20 kHz, 0,1% THD)
- 4 Ohm s: 200 W + 200 W ( 1 kHz, 0.1% total harmonic distortion)
dynamic performance
- 8 Ohm s: 400 W + 400 W (music power)
- 4 Ohm :
total harmonic distortion:
- at 1W Less than 0.05%
- 100 W Less than 0.05%
- rated at Less than 0.1%
damping factor: 50 (20 Hz - 20 kHz, 8 Ohm s); 100 (1 kHz, 8 Ohm )
frequency response: 5 Hz - 80 kHz (+/-1 dB)
signal-to-noise ratio: signal to Noise ratio 110 dB (IHF, A-network)
stereo channel separation: 80 dB (1 kHz, 8 Ohm )
speaker impedance:
- 4-16 Ohm s (except for Switzerland, the UK and Sweden)
- 8-16 Ohm (for Switzerland, United Kingdom & Sweden)

the first ever to be offered with a Class G amplifier. Initially marketed under the names "Dynaharmony" and "E-Series" (Series E). Late HMA-8300 models directly had the designation "Class G". Class G technology reduces the power dissipation in the power stage without any tonal disadvantages and thus allows the construction of power amplifiers with very high performance. In the field of stage and professional music, Class G is used a lot today.

The power amplifier HMA-8300 is equipped with bipolar (!) Power transistors, which meets the requirements of Class G technology. Hitachi developed and released the 'Power MOSFET' transistors in amplifiers around the same time, but did not use these power transistors in Class G circuits. The power amplifier series HMA-7500, HMA-7500 MkII or HMA-8500 MkII and others are built with the 'Power MOSFET' end transistors from Hitachi . This other series of Hitachi end stages then had much greater success and the power amplifiers were often a reference in the hi-fi magazines.