McIntosh MC275 2-Channel Vacuum Tube Amplifier
- 75 Watts x 2 channels or 150 Watts x 1 channel
- Unity Coupled Circuit Output Transformers
- (4) KT88, (4) 12AT7 and (3) 12AX7A vacuum tubes
- One of the most iconic amplifiers ever made by any brand
The MC275, now in its sixth generation, has undergone several refinements that have greatly enhanced its performance. Featuring the widest bandwidth output transformer design by McIntosh, the MC275 boasts tighter bass control and a circuit design that operates quietly even under high thermal conditions. The result is a pure and unadulterated musical experience. With its modern features that cater to today's music lovers, the MC275 still retains the qualities that have made it the most highly regarded vacuum tube amplifier from McIntosh.
The MC275 can be used in either stereo or mono mode. When used as a stereo amplifier, it will deliver 75 Watts per channel to 4, 8 or 16 Ohm speakers; in mono mode it will output 150 Watts to a single speaker with an impedance of 2, 4 or 8 Ohms. The MC275's full power can be delivered regardless of the speaker impedance thanks to our patented Unity Coupled Circuit output transformer technology – the same technology McIntosh was founded on in 1949. The two Unity Coupled Circuit output transformers are located next to the power transformer.
Four KT88 vacuum tubes power the output section while four 12AT7 and three 12AX7A smaller vacuum tubes are used for the Input, Voltage, and Driver amps. The MC275 offers both balanced and unbalanced inputs to connect to your preamplifier and home audio system. It comes with our fuse-less Sentry Monitor short-circuit protection that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal. Our patented gold-plated Solid Cinch speaker binding posts assure the best connection to all speaker cables.
The seven small tubes are LED illuminated to indicate the amplifiers functional status: upon power up, they sequentially glow amber for a few seconds and then all turn green to signify system readiness. In the rare case of an output tube failure, the small tube(s) in front of it will turn red to notify you of the problem. An input and output for our Power Control technology allows other connected McIntosh components, such as preamplifiers, CD players, turntables, or media steamers, to automatically turn on and off.