Mark Levinson ML-50
Image source — © Mark Levinson
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Model name
ML-50
Input sensitivity (mV)
2830
Input impedance (balanced) (Ω)
60 000
Input impedance (single-ended) (Ω)
30 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
425
Output power (4Ω) (W)
850
Gain (dBu)
26
Frequency response low +/- 3dB (Hz)
10
Frequency response high +/- 3dB (Hz)
20 000
Signal to Noise Ratio (dB)
>85
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
< 0.3
Max power consumption (W)
560
Damping factor
N/A
Dimensions (mm)
197 x 438 x 533
Weight (kg)
52.2
Official link
The dual mono amplifier No. 534 contains 12 discrete bipolar output transistors TO-264 15 A, 260 V, 200 W per channel (24 in total); and 12 discrete bipolar transistors TO-220 230 V, 70 MHz per channel (one for each output transistor, 24 in total). Its power supply contains eight discrete high-speed TO-220 Schottky rectifier diodes of 40 A, 250 V per channel (16 in total) and 18 filter capacitors per channel (36 in total), which eventually gives a capacity of 118,800 UF.
Monophonic POWER amplifier No. 536 contains 12 discrete bipolar output transistors TO-264 15 A, 260 V, 200 W per output stage (24 in total); and 12 discrete bipolar transistors TO-220 230 V, 70 MHz per output stage (one for each output transistor, 24 in total). Its power supply contains eight discrete high-speed Schottky rectifier diodes TO-220 40 A, 250 V per output stage (16 in total) and 18 filter capacitors per output stage (36 in total), which eventually gives a capacity of 169,200 UF.
The Mark Levinson No.631 amplifier is made in a vertical housing with a height of just under 53 cm. Like the other components in the series, its body is made of anodized black aluminum. There is a glass central element with red backlight on the sides on the front panel, and a glass Core element with red accent lighting on the upper wall.