Introduced September 1985

The MV52 considerably refined the circuit design of the MV50 which it superceded. In the MV52 two sections of the input tube were connected in parallel to reduce the source impedance of the voltage amplifier, eliminating the cathode follower of the MV50. Probably the most significant change introduced in the MV52 was the use of polypropylene capacitors for the main power supply filter and reservoir ­ eliminating electrolytic capacitors from the main power supplies. This was the first power amplifier to offer an all polypropylene main power supply. All other circuit capacitors in the MV52 were "cjd" polystyrene.

Features: 4, 8, 16 ohm speaker taps (screw type), one pair of inputs, two plate fuses, power switch

V1 & V2: 5751
V3 & V4: 6FQ7
V5 ­ V8: 6CA7/EL34
Replacement Tube Set RT52

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Specifications:

45 watts per channel RMS, at 4, 8, or16 ohms both channels driven from 30Hz to 15kHz with no more than 1% THD or IMD.
Input Sensitivity: 0.80 Volts RMS to rated power
Frequency Response: 20Hz to more than 20kHz , +0, -.5dB
Hum & Noise: 92 dB below 45 watts
Dimensions: 19" X 13 5/8" x 7"
Weight: 40 lbs.