Technics SU-9011A
¥ 49,800 (around 1979)
Commentary
Stereo preamplifier that is paired with power amplifier SE 9021 a.
The low-noise transistor M47LP is used for the first stage differential amplifier to reduce distortion.
Equipped with MC pre-preamp to which MC cartridge can be directly connected.
By using an equalizer element with a capacity deviation of 2% and a resistance deviation of 1% or less, accurate frequency characteristics are achieved.
Built-in microphone mixing circuit.
The mixing recording output terminal is mounted on the rear panel.
Model Rating
Type | Stereo preamplifier |
Input Sensitivity / Impedance | Phono1 mm : 2.5mV/47k Ω Phono1 MC : 70 μ V/10 Ω Phono2 mm : 2.5mV/47k Ω Tuner, Aux : 150mV/47k Ω Tape1, 2, Playback : 150mV/47k Ω Mic : 4mV/10k Ω |
Phono maximum allowable input (1 kHz, RMS) |
Phono1 MM:200mV Phono1 MC:6mV Phono2 MM:200mV |
Rated total harmonic distortion factor | 0.008% |
Signal-to-noise ratio (IHF-A) | Phono1 MM:88dB Phono1 MC : 80 dB (at 250 μ V input), -152dBV (input conversion) Phono2 MM:88dB Tuner, Aux : 100 dB Mic:73dB |
Total harmonic distortion factor (20 Hz to 20 kHz) |
Tuner, Aux : 0.005% (5 v output, Volume 0 db) 0.008% (1 v output, Volume-30dB) Phono1, 2 mm : 0.008% (5 v output, Volume 0 db) 0.01% (1 v output, Volume-30dB) Phono1 MC : 0.03% (5 v output, Volume 0 db) 0.02% (1 v output, Volume-30dB) |
Frequency characteristic | Phono1 and 2 : RIAA standard curve ± 0.2 dB Tuner, Aux : 20 Hz to 20 kHz + 0 -0.2 dB 2 Hz ~ 120 kHz + 0 -3dB |
Tone control | Bass : ± 8 dB (50 Hz) Treble : ± 8 dB (20 kHz) |
Subsonic filter | 30 Hz, -12dB/oct. |
High filter | 7 kHz, -6dB/oct. |
Loudness control (-30dB) | +8dB(100Hz) |
Output Voltage / Impedance | Output : 1V/600 Ω (Rating), 5V/600 Ω (Maximum) Mixing rec out : 1V/600 Ω (Rating), 5V/600 Ω (Maximum) Tape1, 2 rec out : 150 mv |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 13W |
External dimensions | Width 430x Height 97x Depth 285 mm |
Weight | 4.5kg |