McIntosh MC275 Fascicule
Mc275
vacuum tube power amplifier
l e g e n d a r y
In 1949, McIntosh was awarded a patent for its Unity-Coupled output circuit and has been
improving it ever since. The revolutionary circuit design enabled the development of audio
amplifiers that produced the lowest distortion over the widest bandwidth, all without
sacrificing high efficiency.
improving it ever since. The revolutionary circuit design enabled the development of audio
amplifiers that produced the lowest distortion over the widest bandwidth, all without
sacrificing high efficiency.
The venerable MC275, arguably the most sought-after amplifier ever built, was first
launched in 1961 and represented the pinnacle of vacuum tube technology. Commemora-
tive versions, which were popular when released during the 1990s, employed the
amplifier’s original design.
launched in 1961 and represented the pinnacle of vacuum tube technology. Commemora-
tive versions, which were popular when released during the 1990s, employed the
amplifier’s original design.
The enhanced performance of the new MC275 is the result of modern design technology
and manufacturing techniques. Old-fashioned point-to-point wiring has been replaced with
glass-epoxy printed circuit boards, developed through computer-aided design, which
ensures lowest noise and highest operational consistency.
and manufacturing techniques. Old-fashioned point-to-point wiring has been replaced with
glass-epoxy printed circuit boards, developed through computer-aided design, which
ensures lowest noise and highest operational consistency.
Gold-Plated Unbalanced Input
Jacks and Speaker Outputs
Jacks and Speaker Outputs
Balanced XLR Input Jacks
Ceramic Tube Sockets with Gold-
Plated Pins
Plated Pins
Front Apron Power Switch
IEC Plug-In Power Cord on Right Side
Stereo/Mono Switch
Stereo/Mono Switch
Taps for 4, 8, & 16-Ohm Speakers
Polished Stainless Steel Chassis
“updated design
enhances the
performance of a
classic amplifier”