Pioneer A-380
¥ 44,800 (around 1982)
Commentary
Pre-main amplifier with non-switching circuit.
Pioneer's proprietary non-switching circuit is used in the power amplifier to eliminate switching distortion, which adversely affects sound quality.
In addition, multiple differential feedback is also employed to achieve a lower distortion factor.
A DC servo circuit is used for the equalizer to realize a non-coupling capacitor.
A line-straight-switch is also installed to simplify the signal path and achieve higher purity sound.
Model Rating
| Type | Pre-main amplifier |
| Effective power | 40W + 40W (20 Hz to 20 kHz, double-channel drive, 8 Ω) |
| Harmonic distortion factor (20 Hz to 20 kHz) | 0.005% (at effective output) 0.005% (8 Ω at 20W output) |
| Frequency characteristic | Phono MM : 20 Hz to 20 kHz ± 0.2 dB Tuner, AUX, Tape Play : 5 hz to 100 khz + 0 to 3 db |
| Signal-to-noise ratio (IHF, A network Short circuit) |
Phono MM:89dB Phono MC:72dB Tuner, Aux, Tape Play : 105 dB |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption (Electrical Appliance and Material Control Law) | 110W |
| External dimensions | Width 420x Height 98x Depth 367 mm |
| Weight | 6.0kg |