Technics SU-7200
¥ 29,800 (around 1975)
Commentary
Pre-main amplifier with all stages directly connected circuit.
The power amplifier section uses a fully connected differential amplifier OCL circuit.
The equalizer circuit uses a 3-stage direct-coupled low-noise IC with high-precision components.
Equipped with tone control.
Two types of speakers can be connected.
There was a wood case sold separately.
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Model Rating
| Type | Stereo pre-main amplifier | ||||
| Power Amplifier Unit | |||||
| Effective output (both channels) |
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| Total harmonic distortion factor | 0.8% | ||||
| Output bandwidth (both ch8 Ω) | 5 Hz to 100 kHz, -3dB | ||||
| Residual noise | 0.8mV | ||||
| Damping factor | 25 (8 Ω) | ||||
| Applicable load | Main or Remote : 4 Ω ~ 16 Ω Main + Remote : 8 Ω ~ 16 Ω |
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| Preamplifier Section | |||||
| Input Sensitivity / Impedance | Phono : 2mV/47k Ω Tuner, AUX : 150mV/47k Ω |
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| Phono Maximum Input (1 kHz, RMS) | 80mV | ||||
| Signal-to-noise ratio (IHF-A) | Phono:72dB Tuner, AUX : 92 dB |
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| Frequency characteristic | Phono : RIAA standard curve ± 0.5 dB AUX : 10 Hz ~ 30 kHz + 0 -3dB |
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| Tape Monitor 1, 2 | Playback : 150mV/47k Ω Rec Out:150mV |
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| Tone control | Bass : 50 Hz ± 14 dB Treble : 20 kHz ± 14 dB |
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| Loudness | 100Hz+8dB | ||||
| <General> | |||||
| Semiconductor used | IC : 2 Transistor : 17 Diode : 6 pcs |
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| Pwer | 100 VAC, 50/60Hz | ||||
| Power consumption | 60W | ||||
| External dimensions | Width 410x Height 140x Depth 332 mm | ||||
| Weight | 5.8kg | ||||
| Sold Separately | Wood Case SH-770 (¥ 3,000) | ||||