Audio Database

SU-9011A
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