SANSUI AU - α 507i
¥ 59,800 (around 1987)
Commentary
This pre-main amplifier realizes low impedance load drive capability of up to 2 Ω by mounting a strong power stage and power supply.
The power supply section is equipped with a heavyweight power transformer and a dedicated audio capacitor.
Equipped with a source direct function, all input sources can be transmitted to the power amplifier in the shortest distance after passing the accessory circuit.
Equipped with tone control equipped with defeat function.
The chassis is a solid chassis with sufficient consideration for vibration resistance and shielding characteristics, eliminating the influence of unnecessary noise and electromagnetic wave noise.
The REC selector allows you to disconnect the recording input / output circuit from the main signal path when the recording or dubbing function is not used.
Equipped with a MM/MC switching phono equalizer.
Uses a power cord with polarity display.
Equipped with a subsonic filter.
Model Rating
Type | Integrated DC amplifier |
Power Amplifier Unit | |
Effective output (10 Hz to 20 kHz, both channels driven) | 90W + 90W (6 Ω) 80W + 80W (8 Ω) |
Total harmonic distortion factor (at effective output) | 0.005% or Less (8 Ω) |
Cross modulation distortion factor | Not more than 0.005% |
Damping factor | 100 (8 Ω) |
TIM (SAWTOOTH) | Below the measurement limit |
Preamplifier Section | |
Input Sensitivity / Impedance (1 kHz) | Phono MM : 2.5mV/47k Ω Phono MC : 300 μ V/100 Ω Tuner, CD, Line, Tape Play : 150mV/47k Ω |
Phono maximum allowable input | MM:210mV(THD 0.01%) MC:25mV(THD 0.08%) |
Frequency characteristic | Phono MM : 20 Hz to 20 kHz ± 0.2 dB CD, Line, Tape Play : 1 hz to 200 khz + 0 db -3dB |
Signal-to-noise ratio | Phono MM : 83 dB or more Phono MC : 70 dB or more Tuner, Line, CD, Tape Play : 110 dB or higher |
Tone control | Maximum variation of Bass : ± 8 dB (100 Hz) Maximum variation of Treble : ± 8 dB at 10 kHz |
Subsonic filter | 16 Hz (-3dB, 6dB/oct.) |
<General> | |
Rated power consumption | 175W |
External dimensions | Width 448x Height 135x Depth 370 mm |
Weight | 10.8kg |