MV55

About the MV55

The Conrad Johnson MV55 is a vintage stereo vacuum tube power amplifier in the MV series, using a push-pull EL34 output stage and a robust power supply with polypropylene capacitors in the main filter and reservoir sections for improved transparency and reliability. Rated at 45 watts per channel in ultralinear mode or 22 watts per channel in triode into 4, 8, or 16 ohm loads, it is known for a fluid, musical presentation with rich midrange and low listener fatigue. The MV55 offers selectable ultralinear/triode operation, user-adjustable output tube bias via onboard test points and indicators, and separate 4/8/16 ohm output taps, and it was sold with an optional protective tube cage and detailed owner's manual. Originally positioned as an entry-level Conrad Johnson power amp evolving from the MV52, it has long since been discontinued and appears in the company's vintage listing, remaining sought after on the used market among enthusiasts who value its classic tube sound.