McIntosh Mc451 Dual Mono Power Amplifier

McIntosh Mc451 Dual Mono Power Amplifier

Binghamton, NY, USA | 2022 – The MC901’s Little Brother Continues the Brand’s Hybrid Drive Technology.


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McIntosh is proud to announce the MC451 Dual Mono Power Amplifier, a unique combination of a vacuum tube and solid-state amplifier that uses McIntosh’s Hybrid Drive™ technology.

The MC451 follows the success of McIntosh’s MC901 model. A more compact product, the MC451 is strategically built so that it is easier to place within an audio system, offering 150 Watts of power from the vacuum tube section and 300 Watts from the solid-state section. The MC451 features a variety of McIntosh patented technologies including Power Guard® and Power Guard SGS®, Sentry Monitor™, Autoformer™, Unity Coupled Circuit, Solid Cinch™ speaker binding posts, Monogrammed Heatsinks™, and a DualView™ Power Output Meter.

The MC451 is the latest model to incorporate McIntosh’s Hybrid Drive technology. The brand’s team of engineering experts took their extensive experience to seamlessly combine both vacuum tube and solid state to develop the company’s Hybrid Drive design that works to redefine sound performance. With Hybrid Drive from McIntosh, the highest level of sound reproduction is now available to offer flexibility in listening capabilities.

McIntosh Mc451 Dual Mono Power Amplifier


300W Solid State Amplifier

Output Autoformer with 2, 4, 8Ω Taps

Power Guard and Sentry Monitor

Solid-state input doubles as the mono input when using the internal crossover

Separate inputs for the Vacuum Tube and Solid-state amplifiers are provided for using an external crossover

150W Vacuum Tube Amplifier

Unity Coupled Circuit Output Transformer with 2, 4, 8Ω Taps


MarleyMcIntosh Mc451 Dual Mono Power Amplifier

Power Guard SGS and Sentry Monitor

Direct Input for Using an External Crossover

Illuminated Driver Tubes


1 Knob for Solid State / Tube Balance

1 Knob for Crossover Frequency


McIntosh Mc451 Dual Mono Power Amplifier

The MC451 will be available via authorized US & Canadian McIntosh Dealers for an MSRP of $14,000 USD beginning December 2022 and to the rest of the world shortly after.

Founded in 1949, McIntosh Laboratory, Inc. is known for offering distinguished quality audio products, superior customer service and the ultimate experience in music and film. All McIntosh products are handcrafted at the Binghamton, NY factory by over 170 employees with a passion for music and the McIntosh heritage. McIntosh continues to define the ultimate home entertainment experience for discriminating consumers around the world, with the iconic “McIntosh Blue” Watt Meters globally recognized as a symbol of quality audio. Since its inception, McIntosh has been powering some of the most important moments in music history and pop culture. From President Lyndon Johnson’s inauguration speech to Woodstock to the famous Grateful Dead “Wall of Sound,” McIntosh has not only witnessed history, it has shaped it. With McIntosh, customers have the ability to create their own premium audio experience – and truly live their music. Visit to learn more.



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