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Cutting Edge Electronics since 1982
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2-Channel Vacuum Tube Amplifier

Model # MC275

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This tube power amplifier has all the features to meet the needs of today's music enthusiast, while preserving the qualities that have made the MC275 the most revered McIntosh tube amplifier.

This sixth generation MC275 has many subtle enhancements from the previous release that greatly improve performance. Combined with the widest bandwidth McIntosh output transformer design, the MC275 features tauter bass control and thermally quiet circuit design. The result is pure music.

"Good audio engineering is timeless." - Stereophile

McIntosh patented and gold-plated Solid Cinch speaker binding posts assure the best connection to all speaker cables , while high quality balanced and unbalanced input connectors enhance signal transfer from the connected preamplifier .

The seven small tubes are LED illuminated to indicate the amplifiers functional status: upon power up, they sequentially glow amber for a few seconds and then all turn green to signify system readiness. In the rare case of an output tube failure, the small tubes in front of it will turn red to notify you of the problem. Power Control is used to remotely control tube illumination from a McIntosh preamplifier. Contact your local dealer to learn more.


  • Gold-Plated Unbalanced Input
  • Jacks and Speaker Outputs
  • Balanced XLR Input Jacks
  • Ceramic Tube Sockets with Gold-Plated Pins
  • Front Apron Power Switch
  • IEC Plug-In Power Cord on Right Side
  • Stereo/Mono Switch
  • Taps for 4, 8, & 16-Ohm Speakers
  • Polished Stainless Steel Chassis
Electronic Specifications
Power Output per Channel 75W @ 4, 8 or 16 Ohms
Number of Channels 2
Total Harmonic Distortion 0.5% maximum harmonic distortion at any power level from 250 milliwatts to rated power, 20Hz to 20,000Hz ( 0.25% harmonic distortion at 1kHz)
S/N below rated output 105dB
Dynamic Headroom 1.2dB
Damping Factor >22
Rated Power Band 20Hz to 20kHz
Frequency Response +0, -0.5dB from 20Hz to 20,000Hz +0, -3.0dB from 10Hz to 100,000Hz
Remote Power Control Yes, input and output
Multi-Channel DB25 Cable N/A
General Specifications
Circuit Configuration Unity Coupled
Circuit Design Vacuum Tube
Mono Bridge Yes
Mono Parallel Yes, 150W @ 2, 4 or 8 Ohms
Output Type Unity Coupled Output Transformer
Meters No
Meter Light Switch Small signal tubes LEDs controlled by McIntosh preamp
Balanced Input Yes
Front Panel N/A
Illumination Small Signal Tubes, LED
Chassis Style Polished Stainless Steel
Speaker Binding Post Type Patented Solid Cinch Speaker Binding Posts
Weights & Dimensions
Unit Dimensions (W x H x D) 21-1/2" (54.6cm) (including cables) x 8-1/2" (21.6cm) (including feet) x 12" (30.5cm)
Unit Weight 67 lbs (30.5 kg)
Shipping Weight 75 lbs (34.1 kg)

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy, and expensive and you probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

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