MARK LEVINSON No20L
¥ 2,800,000 (1 set of 2, released in 1986)
Commentary
This monaural power amplifier achieves enhanced power while pursuing higher quality than ML-2L.
The power supply section has a fully ± independent power supply configuration with power transformers on each of the positive and negative sides. Each transformer uses a large-capacity 600A toroidal transformer. The filter condenser uses high-quality polyethylene with low noise and excellent impedance characteristics in parallel.
A high-speed regulator with a larger capacity than ML-2L is installed in the power supply from the driver stage to the output stage to provide a clean and stable power supply.
Complimentary service push-pull circuit with pure class A operation is used for all stages.
Balance receiving is also possible by using both CAMAC and Canon terminals.
High power is possible by bridge connection.
.JPG)
Model Rating
| Type | Monaural power amplifier |
| Rated output | 400W (2 Ω) 200W (4 Ω) 100W (8 Ω, 20 Hz to 20 kHz, THD0.1% or less) 800W (4 Ω, bridge connected) 400W (8 Ω, bridge connected) |
| Input Sensitivity / Impedance | 1.4V/50k Ω |
| Gain | 26dB |
| Total harmonic distortion factor | 0.06% (8 Ω, Effective Output) |
| Cross modulation distortion factor | 0.02% (8 Ω, Effective Output) |
| Frequency characteristic | 4 Hz to 140 kHz -3dB |
| Signal-to-noise ratio | 100dB |
| Slew rate | 15 v / μ sec |
| Damping factor | 1000 (8 Ω, 50 Hz) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | Approx. 500W |
| External dimensions | Width 483x Height 210x Depth 560 mm |
| Weight | Approximately 30 kg |