McIntosh MC451 Dual Mono Amplifier (In Store Purchases Only)

Sale price$19,500.00

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McIntosh MC451 Dual Mono Amplifier

A Stunning Sound Experience.

The MC451 Dual Mono Amplifier joins the MC901 in offering the ultimate solution to bi-amping a loudspeaker. Like the MC901, the MC451 uses our Hybrid Drive™ technology that combines a separate vacuum tube and solid state amplifier onto one single chassis to produce the best possible sound performance from a bi-ampable speaker. Unlike the larger MC901, the MC451 has a more conventional McIntosh form factor and size, allowing it to fit into home audio systems, racks, and furniture more easily. Adding a pair of MC451s to your stereo system will allow your prized speakers to perform like never before.

The MC451 is comprised of a 150 Watt vacuum tube amplifier and a 300 Watt solid state amplifier, which is more than enough power to drive virtually all speakers.

The two amplifiers in the MC451 are designed to work together in a synergistic relationship and are specifically engineered to assure that each only amplifies its intended frequencies. The large but quiet toroidal transformer generates enough power so that neither amplifier robs power or performance from the other. All of this results in easy bi-amping with unparalleled performance and sound reproduction from your speakers.

The uncompromising fit and finish of the MC451 is highlighted by familiar McIntosh design cues. The front features a signature black glass faceplate with three clear windows that allow viewing of the vacuum tubes, the DualView meter, two rotary control knobs, an illuminated logo and lettering, and built-in aluminum handles. The top is highlighted by a series of block diagrams printed on glass inserts outlining the circuitry and specifications of the unit. All of this sits atop of stainless steel chassis that's been polished to a pristine mirror finish.

McIntosh MC451 Amplifier
The MC451 amplifier can be combined with a variety of preamplifiers, turntables, CD players, media streamers, speakers, and other specialty products to form a complete home audio system designed for bi-amping loudspeakers.

Dual Mono Amplifier
- Includes our Hybrid Drive™ technology that uses the best of vacuum tubes and solid state to produce the best sound performance
- Designed with bi-amping loudspeakers in mind
- 150 Watt vacuum tube amplifier and 300 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: 300 Watts @ 2, 4 or 8 Ohms Vacuum Tube section: 150 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: Push-Pull Complementary 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: 2 (1 Solid State or Mono, 1 Vacuum Tube)
  • - Front Panel: Glass
  • - Illumination: Direct LED
  • -Chassis Style: Polished stainless steel & black painted steel
Weight & Dimensions

- Unit Dimensions (W x H x D):
17-7/8" (45.4cm) x 11-13/16" (30cm) x 21-1/2" (54.6cm)
- Unit Weight: 133 lbs (60.3 kg)
- Shipping Weight: 159 lbs (72.1 kg)


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