McIntosh MC901 Dual Mono Amplifier (In-Store Purchases Only & USD Pricing)

Sale price$38,000.00

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McIntosh MC901 Dual Mono Amplifier


McIntosh has been perfecting vacuum tube amplifiers since the 1940s and solid state amplifiers since the 1960s. Our amplifiers have been used at many historic events including presidential inaugurations and Woodstock, as well as in landmark sound systems like the Grateful Dead's Wall of Sound and Despacio. From that heritage comes a truly one-of-a-kind home audio amplifier only we could dream of, design and build as the ultimate solution for bi-amping loudspeakers: the McIntosh MC901 Dual Mono Amplifier.

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.

Vacuum tubes do not perform at their best when they are amplifying lower frequencies that are not being used by the loudspeaker. With the MC901, the vacuum tube amp will not be burdened with low end reproduction as the solid state section will drive these frequencies. The two amplifier sections of the MC901 are designed to work together in a synergistic relationship and are specifically engineered to assure that each section only amplifies its intended frequencies. Each amplifier section has its own discrete power supply so neither siphons power or performance away from the other. All of this results in easy bi-amping with unparalleled performance and sound reproduction from your speakers.

Like virtually all McIntosh amplifiers, the MC901 features an iconic "McIntosh Blue" Watt meter, which has come to be recognized around the world as a symbol of quality home audio. And just like the MC901 itself is a new design, so too is its meter with the introduction of our new DualView™ Power Output Meter. The DualView meter features two of our 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

Dual Mono Amplifier
- Includes our Hybrid Drive™ technology that uses the best of vacuum tubes and solid state to produce the best sound performance
- The ultimate solution for bi-amping loudspeakers: 300 Watt vacuum tube amplifier and 600 Watt solid state amplifier on one chassis
- Vacuum tube section powers mid and upper drivers
- Solid state section drives power hungry woofers
- DualView™ Power Output Meter

  • - Power Output per Channel: Solid State section: 600 Watts @ 2, 4 or 8 Ohms Vacuum Tube section: 300 Watts @ 2, 4 or 8 Ohms
  • - Number of Channels: 1
  • - Dynamic Headroom Solid State section: 2.5dB Vacuum Tube section: 1.2dB
  • - Damping Factor: Solid State section: >40 Vacuum Tube section: >18
  • - Rated Power Band: Solid State section: 20Hz to 20kHz Vacuum Tube section: 20Hz to 20kHz
  • - Frequency Response: Solid State section: +0, -0.25dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 100,000Hz Vacuum Tube section: +0, -0.5dB from 20Hz to 20,000Hz +0, -3dB from 10Hz to 70,000Hz
  • - Circuit Configuration: Solid State section: Quad Balanced Vacuum Tube section: Unity Coupled
  • - Output Type: Solid State section: Autoformer™ Vacuum Tube section: Unity Coupled Output Transformer
  • - Meters: DualView™ Power Output Meter
  • - Balanced Input: 3 (1 Solid State, 1 Vacuum Tube, 1 Composite)
  • - Front Panel: Glass
  • - Illumination: Direct LED
  • - Chassis Style: Polished stainless steel & black painted steel
Weight & Dimensions

- Unit Dimensions (W x H x D):
17-17/32" (44.5cm) x 13-3/8" (34cm) x 29-17/32" (75cm)
- Unit Weight: 180 lbs (81.6 kg)
-Shipping Weight: 200 lbs (90.7 kg)


- Speaker Binding Post Type:
Patented Solid Cinch™ Speaker Binding Posts