Technics SU-C03
¥ 55,000 (around 1980)
Commentary
Compact size integrated DC amplifier.
The main amplifier section employs six dedicated ICs for each of the voltage amplifier stage and power amplifier stage, and has a DC amplifier configuration that eliminates capacitors with time constants from the signal path.
The power supply circuit uses a small cut-core transformer with less leakage flux to ensure a low-noise design.
In addition, two 8,200 μ F electrolytic capacitors are used.
Approximately 1/3 of the total internal volume is secured as heat radiation space, and a high-efficiency large heat sink is adopted.
Uses precision die-cast panels.
Equipped with a tone control that is dimmed at the midpoint.
Model Rating
Type | Stereo pre-main amplifier |
Effective output (both channel drive) | 40W + 40W (8 Ω, 20 Hz to 20 kHz) |
Total harmonic distortion factor | 0.03% (20 Hz to 20 kHz at Rated Output) |
Output Bandwidth (THD 0.03%) | 5 Hz to 30 kHz |
Frequency characteristic | Phono : RIAA ± 0.5 dB Tape, Tuner, Aux : 2 Hz to 100 kHz + 0 -3dB |
Signal-to-noise ratio (IHF-A) | Phono:86dB Tape, Tuner, Aux : 97 dB |
Residual noise | 250 μ V |
Damping factor | 40 (8 Ω) |
Input Sensitivity / Impedance | Phono : 2.5mV/47k Ω Tape, Tuner, Aux : 150mV/39k Ω |
Load impedance | Main or remote : 4 Ω ~ 16 Ω Main and remote : 8 Ω ~ 16 Ω |
Phono maximum allowable input | 150 mv (1 kHz, RMS) |
Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
Subsonic filter | 30 Hz, -6dB/oct. |
High filter | 7 kHz, -6dB/oct. |
Loudness control | + 9 dB (50 Hz, VR-30dB) |
Pwer | 100 VAC, 50Hz/60Hz |
Power consumption | 105W |
External dimensions | Width 297x Height 98x Depth 270 mm |
Weight | 5.9kg |