Marantz SM-50
¥ 52,800 (around 1980)
Commentary
A stereo power amplifier of the Marantz slim type component component 50 series.
The amplifier circuit realizes a Low-TIM design by the DC amplifier configuration with DC servo IC.
The power supply section uses a newly developed EI transformer with superior high-frequency characteristics and sufficient collector loss.
Equipped with a logarithmic compression type power meter that can read peak power of 4 Ω and 8 Ω without switching the range.
Equipped with two types of speaker jacks, you can sound simultaneously or separately.
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Model Rating
| Type | Stereo power amplifier |
| Rated Output (20 Hz to 20 kHz, Both Channel Drive) | 50W + 50W (8 Ω) |
| Total Harmonic Distortion Factor (20 Hz to 20 kHz, 8 Ω) | 0.02% |
| Intermodulation Distortion Factor (SMPTE, 8 Ω) | 0.02% (at rated output) |
| Frequency characteristic | 5 Hz ~ 50 kHz + 0 -0.3 dB |
| Input Sensitivity / Impedance | 1.5V/32k Ω |
| Damping factor | 80 |
| Signal-to-noise ratio (IHF-A) | 120dB |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 125W |
| External dimensions | Width 416x Height 73x Depth 302 mm |
| Weight | 7.9kg |