SANSUI AU-1100
¥ 32,000 (released in 1975)
Commentary
A pre-main amplifier with the same audio concept as the AU 3300.
All stages are directly connected to OCL pure complimentary service circuit.
In the first stage, a dual transistor with uniform characteristics and excellent stability is used as a differential amplifier.
The equalizer section uses a 2-stage direct-coupled circuit with carefully selected low-noise transistors at the first stage.
The tone control section uses a 10-step click-stop system.
The circuit configuration is composed of a 2-stage direct-coupled tone amplifier and a CR-type circuit to obtain simple characteristics.
Equipped with a microphone mixing circuit with adjustable level.
Mixed sound can be retrieved from the recorded output.
Equipped with two speaker outputs.
± 2 power supply system is adopted, and click noise generated at switch switching is reduced.
One touch push button type is adopted for the input selector.
It is equipped with functions such as high filter, loudness, tape monitor, mode switching, and headphone jack.
Model Rating
Type | Pre-main amplifier |
Effective power | 22W + 22W (8 Ω, both channel operation, 40 hz to 20 khz) 25W + 25W (8 Ω, both channel operation, 1 kHz) 28W + 28W (8 Ω, single-channel operation, 1 kHz) |
Music power | 84W (4 Ω, 1 kHz) |
Total harmonic distortion factor | Not more than 0.15% |
Intermodulation Distortion Factor (70 Hz : 7 kHz = 4 : 1, SMPTE) | 0.2% or Less (Rated Output) |
Power Band With (IHF) | 10 Hz ~ 40 kHz (8 Ω) |
Frequency Response (at 1W) | 10 Hz ~ 40 kHz + 0.5 -1.5 dB |
RIAA deviation (30 Hz to 15 kHz) | ± 0.5 dB |
Damping factor | 50 (8 Ω) |
Input Sensitivity / Impedance | Phono : 2.5mV/50k Ω Mic : 2.5mV/10k Ω Tuner, Aux, Tape Monitor : 130mV/50k Ω |
Phono maximum allowable input | 200 mv (1 khz, THD0.2% or less) |
Output Voltage (1 kHz) | Tape Rec(Pin):100mV |
Channel Separation (1 kHz) | Phono : 60 dB or more Tuner, Aux, Tape rec : 65 dB or higher |
Hum and noise | Phono : 75 dB or more Mic : 65 dB or more Aux, Tuner, Tape Monitor : 90 dB or higher |
Tone control | Bass : ± 12 dB (50 Hz) Treble : ± 12 dB (15 kHz) |
Loudness (at Volume-30dB) | + 10 dB at 50 Hz, + 8 dB at 10 kHz |
High filter | -3dB (7 kHz), 6dB/oct. |
Power consumption | 58W (rated) 156W maximum |
External dimensions | Width 400x Height 120x Depth 240 mm |
Weight | 5.5kg |