MARK LEVINSON No33L
¥ 2,400,000 (100 v specification, 1 unit, sold in December 1994)
¥ 2,450,000 (200 v specification, 1 unit)
Commentary
A monaural power amplifier that incorporates Mark Levinson's outstanding design technology and acoustic theory.
The power supply section is equipped with a 2,450 VA Ultra High Volume toroidal transformer, plus / minus one transformer, and a combination of 12 high quality capacitors of 39,000 μ F. With a capacitance close to 1/2 farad, more than 1,100 joules of energy can be supplied.
By internally generating an accurate sine wave of 60 Hz, it provides an extremely clean power supply independent of the voltage amplification stage, which has the most influence on sound quality, and achieves signal amplification that is not affected by AC power supply fluctuations or noise.
A very thick oxygen-free copper bus bar is used for the DC-power supply line to reduce the impedance of the power supply.
Bus bars are also used for wiring from the output stage to the speaker terminal, enabling maximum output of 80A.
In order to efficiently dissipate the large amount of heat generated by the 60 TO-3 power transistors, we have adopted a tower-type casing designed to maximize the heat dissipation area of the heat sink and to provide smooth heat countermeasures.
Model Rating
| Type | Monaural power amplifier |
| Rated output | 2400W (1 Ω) 1200W (2 Ω) 600W (4 Ω) 300W (8 Ω, 20 Hz to 20 kHz, THD0.1% or less) |
| Frequency characteristic | 20 Hz to 20 kHz 0.1 dB |
| NOISE | -80dB or less (based on 1W) |
| Input sensitivity | Balance : 2.4 v Unbalanced : 1.2 v |
| Voltage gain | 26.8dB |
| Input impedance | 50k Ω (balanced / unbalanced) |
| Output impedance | 0.05 Ω or less |
| Input terminal | XLR balance : 1 system RCA balance : 2 systems (positive phase / negative phase) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 600W (idle) 400W (standby) |
| External dimensions | Width 356x Height 788x Depth 788 mm |
| Weight | 136 kg (when packed) |