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Technical Description
Inside Bottom View of the MC303
McIntosh Laboratory, the company who introduced the
world’s first amplifier that could be called “High Fidelity”,
has done it again. The McIntosh engineering staff has cre-
ated a power amplifier without compromise, using the most
advanced McIntosh circuit design concepts.
A continuous average power output rating of 300 watts
per channel and with an output current of greater than 60
amperes per channel, making this one of the most ad-
vanced and powerful amplifiers McIntosh has ever manu-
factured. The distortion limits for the MC303 are no more
than 0.005% at rated power output for all frequencies from
20Hz to 20,000Hz. Typical performance at mid frequencies
is less than 0.0002%. The true distortion readings on the
MC303 are so low, it takes special measuring techniques
to make accurate readings. The MC303 can deliver the
best possible performance from any type of high quality
loudspeaker system.
Creating an amplifier with this level of performance did
not come easily. Many months of design, testing and mea-
suring were required. Extensive controlled listening tests,
the ultimate form of measuring, were made before the final
design was accepted.