MC901 Dual Mono Power Amplifier. One-of-a-kind, ultimate solution for bi-amping loudspeakers.

McIntosh is proud to announce the new MC901 Dual Mono Amplifier. A 300 Watt vacuum tube amplifier and a 600 Watt solid state amplifier on one chassis.

Legendary home audio company McIntosh has been perfecting vacuum tube amplifiers since the 1940s and solid state amplifiers since the 1960s.

The MC901 is a monoblock amplifier that drives a single speaker. But it is unlike any other monoblock amplifier. What makes the MC901 so unique is that it’s two amplifiers combined into one. Adding to the uniqueness is that each amplifier is of differing design philosophies: the MC901 consists of a 300 Watt vacuum tube amplifier attached to a 600 Watt solid state amplifier on one unified chassis.

The MC901 introduces McIntosh’s new DualView™ Power Output Meter. The DualView meter features two of McIntosh’s traditional, fast responding mechanical meters stacked above and below each other in a single meter window; one meter is dedicated to the 300 Watt vacuum tube amp and the other to the 600 Watt solid state amp. Each meter operates independently of the other and displays the real time power reading of each amplifier section.

The MC901 comes with the technology one would expect from a McIntosh amplifier: Power Guard® in the 600 Watt solid state amplifier section, Sentry Monitor™, Quad Balanced design, Power Control, Solid Cinch™ speaker binding posts, McIntosh Monogrammed Heatsinks™, and McIntosh’s eco‐friendly Power Management System.

A brand new technology in the 300 Watt vacuum tube amplifier section of the MC901 is Power Guard Screen Grid Sensor™(SGS). Power Guard SGS™ helps prevent premature vacuum tube failure by monitoring the screen grid current in the KT88 output vacuum tubes. If the current becomes too high, a circuit in Power Guard SGS is activated which then dynamically attenuates the input signal in real time to keep the vacuum tubes operating at safe levels.

The MC901 is a truly one‐of‐a‐kind home audio amplifier.