Audio Database

SU-C01
Commentary

Stereo preamplifier with built-in pre-preamp for MC cartridge.

The first stage of the MC pre-preamp consists of a low-noise transistor with complimentary service push-pull to achieve low noise, low distortion and low output impedance.

A newly developed low-noise transistor is used in the first stage of the phono equalizer section, and the SN ratio is improved by using a current mirror load differential amplifier that can select an operating current that minimizes the distortion level.
In addition, the equalizer element uses metal film resistance within ± 1% deviation and polypropylene capacitor within ± 2% to obtain excellent characteristics.

In this mode, the frequency response is flat and the circuit is composed of a low-noise IC.

The power transformer is housed in an iron case with excellent magnetic shielding effect, and a low-noise Zener diode is also used in the constant voltage circuit to minimize the noise generated in the power supply line and ensure a low noise design.

It comes with a one touch connection cord that directly connects the power amplifier, tuner and SU-C01 via the shortest path.

Precision finish die-cast cabinet is adopted.

Equipped with a subsonic filter.

Model Rating
Type Stereo preamplifier
Input Sensitivity / Impedance Phono MM : 2.5mV/47k Ω
Phono MC : 100 μ V/47 Ω
Tuner, Aux, Tape : 150mV/47k Ω
Total harmonic distortion rate (20 Hz to 20 kHz) Phono MM : 0.005% (VR -20dB, 3 v output)
Tuner, Aux, Tape : 0.003% (VR max, 3 v output)
Signal-to-noise ratio (IHF-A) Phono MM:88dB
Phono MC : 78 dB at 250 μ V input
Tuner, Aux, Tape : 100 dB
Frequency characteristic Phono MM, MC : 20 Hz to 20 kHz, RIAA deviation ± 0.2 dB
Tuner, Aux, Tape : 20 Hz to 20 kHz + 0 -0.05 dB
2 Hz ~ 250 kHz + 0 -3dB
Phono maximum allowable input
(1 kHz, RMS)
Phono MM:200mV
Phono MC:8mV
Rated output Output : 1 V (rated), 7 V (maximum)
Rec out:150mV
Tone control Bass : ± 10 dB (50 Hz)
Treble : ± 10 dB (20 kHz)
Subsonic filter 30 Hz, -12dB/oct.
High filter 7 kHz, -6dB/oct.
Loudness control (-30dB) +6dB(100Hz)
Pwer 100 VAC, 50Hz/60Hz
Power consumption 8W
External dimensions Width 297x Height 49x Depth 241 mm
Weight 3.0kg