TRIO L-07M
¥ 100,000 (1 unit, around 1979)
Commentary
This monaural power amplifier was developed based on the conclusion that the speaker cord must be kept within 1m in order for the power amplifier to drive the speaker system sufficiently.
The circuit is greatly simplified so that the signal follows the shortest path from the input terminal to the output terminal.
In addition, the power supply is designed away from the amplifier to minimize the influence on the signal system.
These circuit designs improve various characteristics such as S/N ratio and distortion factor.
Model Rating
| Type | DC monaural power amplifier |
| Rated output | 150W (20 Hz ~ 20 kHz, 8 Ω) |
| Total harmonic distortion factor | 0.08% (at rated output, at 15W output) 0.002% (8 Ω at 1 kHz Rated Output) |
| Cross modulation distortion factor | 0.002% (8 Ω at Rated Output / 15W Output) |
| Signal-to-noise ratio | 120 dB (IHF A-curve input short) |
| Frequency characteristic | DC ~ 50 kHz + 0 dB -0.5 dB 150kHz +0dB -1.5dB |
| Output code | 1m, 10m Ω / m (DC Resistance) |
| External dimensions | Width 200x Height 155x Depth 390 mm |
| Weight | 13kg |