The Hitachi SR-703 is a receiver manufactured in Japan between 1977 and 1978. It features a stylish silver and black exterior. With a power consumption of 320 W, the unit is robust and designed to deliver substantial audio performance. Its dimensions are 490 x 144 x 400 mm, and it weighs 11.5 kg. The original retail price was approximately 898 DM. The receiver includes various inputs, such as two Phono inputs with a sensitivity of 2.5 mV and 47 kOhm impedance, one Aux input at 150 mV and 50 kOhm, and multiple Tape Play and DIN inputs. For outputs, the SR-703 is equipped with Tape Rec connections and a headphone jack, supporting two speaker pairs. The amplifier provides a continuous power output of 40 W per channel at 8 Ohms and 60 W at 4 Ohms, with dynamic power ratings of 65 W at 8 Ohms and 75 W at 4 Ohms. The total harmonic distortion at nominal power is 0.2%, and the damping factor measures at 30. Its frequency response ranges from 10 Hz to 30 kHz with a ± 1 dB variation. The signal-to-noise ratio for phono inputs stands at 70 dB and 80 dB for high-level inputs. The sound adjustments include bass and treble controls, with a loudness feature that enhances low frequencies. The tuner section offers FM and AM reception across specified frequency ranges, boasting impressive sensitivity and selectivity abilities. The receiver also incorporates FM muting for cleaner sound reception. The SR-703 is part of a larger series that includes models like the SR-503 L, SR-603, SR-803, and SR-903.
