Audio Dynamics A-1
¥ 80,000 (around the mid-1980s?)
Commentary
Pre-main amplifier of Euro-style component series.
By arranging independent power supply for each stage, mutual influence is suppressed, and stable operation with low distortion rate and good start-up is enabled.
Equipped with tone control.
It also has an infrasonic filter that cuts out harmful ultra-low frequency signals.
Equipped with a CD direct position, CD signal can be directly input to the power amplifier section.
System remote control is included.
This remote control supports not only A1 operation but also various components of the Euro-Style series, enabling centralized control of tuner tuning, CD selection and programs.
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Model Rating
| Type | Integrated amplifier |
| Rated Output (Both Channels Operating) | 60W + 60W (8 Ω, 20 hz to 20 khz, THD0.05%) 75W + 75W (4 ohm, 20 hz to 20 khz, THD0.1%) |
| Dynamic Output (IHF) | 85W + 85W (8 Ω) 120W + 120W (4 Ω) 160W + 160W (2 Ω) |
| Total harmonic distortion factor | 0.05% or Less (20 Hz to 20 kHz, 8 Ω, at Rated Output) |
| Output bandwidth | 15 Hz ~ 5 kHz (THD0.1%, 30W output, 8 Ω) | Frequency characteristic | 20 Hz to 20 kHz ± 0.5 dB |
| Damping factor | 100 (50 Hz, 8 Ω) 80 (10 kHz, 8 Ω) |
| Input Sensitivity / Impedance | Phono MM : 2.5mV/47k Ω Phono MC : 0.25mV/100 Ω CD, Tuner, Aux, Tape : 150mV/180k Ω |
| S/N ratio (input short, IHF-A, rated output) | PHono MM:85dB Phono MC:65dB CD, Tuner, Aux, Tape : 95 dB |
| Phono RIAA deviation | 20 Hz to 20 kHz ± 0.5 dB |
| Tone control | Bass : 20 Hz, ± 10 dB (160 Hz, ± 3 dB) Treble : 20 kHz, ± 9 dB (4 kHz, ± 3 dB) |
| Loudness (Vol-30dB) | + 8.5 dB at 20 Hz, + 4.5 dB at 100 Hz |
| Infrasonic filter | 18dB/oct(-3dB at 12Hz) |
| Output Level / Impedance | Rec out : 150mV/820 Ω |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 195W |
| External dimensions | Width 430x Height 100x Depth 370 mm |
| Weight | 10kg |
| Attachment | Wireless Remote Control |
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