Pioneer SM-1800II
¥ 75,000 (around 1980)
Commentary
Stereo power amplifier with 2 power transformers.
DC amplifier configuration is adopted.
It uses L/R-independent 2 power supply 2 transformer to reduce interference between channels and improve separation characteristics.
Model Rating
| Type | Stereo power amplifier |
| Effective output (both channels driven, 20 Hz to 20 kHz) | 85W + 85W (8 Ω) |
| Harmonic distortion factor (20 Hz to 20 kHz at effective output) | 0.01% |
| Output Bandwidth (IHF, double-channel drive, 8 ω) | 5 Hz ~ 70 kHz (Distortion Factor 0.05%) |
| Frequency response (at 1W output) | 5 Hz to 100 kHz + 0 -1dB |
| Input terminal | Input : 1V/50k Ω |
| Output terminal | A / B : 4 Ω ~ 16 Ω A + B : 8 Ω ~ 16 Ω Headphone |
| Damping factor (20 Hz to 20 kHz, 8 Ω) | 50 |
| Signal-to-noise ratio (IHF, A-network, short circuit) | 120dB |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption (Electrical Appliance and Material Control Law) | 210W |
| External dimensions | Width 480x Height 143x Depth 378 mm |
| Weight | 13kg |