MC275 2-Channel Vacuum Tube Amplifier
 
75 Watts x 2 channels or 150 Watts x 1 channel
Unity Coupled Circuit Output Transformers
(4) KT88, (4) 12AT7 and (3) 12AX7A vacuum tubes
One of the most iconic amplifiers ever made by any brand
 
Upon its initial release in 1961, the MC275 Vacuum Tube Amplifier became an instant favorite due to its ability to drive the power-hungry speakers of that time period with great power at low distortion levels. However, as transistors emerged and vacuum tubes became 'old technology,' the MC275 was discontinued in 1971. Thankfully, that is not where the story of the MC275 ends.
 
"Good audio engineering is timeless." - Stereophile 
It came back into production as a special commemoration edition in 1993 to posthumously honor McIntosh co-founder and longtime president Gordon Gow. The reincarnated MC275 received incredibly high acclaim and earned its spot back in the product lineup. The overall storyline behind the MC275 and its history with McIntosh is exceptionally rich and it has been the driving force behind countless home audio systems for decades. It is hard to imagine McIntosh without the MC275.
 
Now in its sixth generation, the MC275 has many subtle enhancements from the previous releases that have greatly improved 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. This vacuum 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 vacuum tube amplifier.
 
Specifications
 
Electronic Specifications
FTC Power Output Rating
75 W
Power Output per Channel
75 W into 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 20kHz
(≤ 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 20kHz
+0, -3.0dB from 10Hz to 100kHz
 
Control
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
 
Connectivity
Speaker Binding Post Type
Patented Solid Cinch™ Speaker Binding Posts
 
Weights & Dimensions
Unit Dimensions (W x H x D)
16-1/2" (41.9cm) x 8-1/2" (21.6cm) x 12" (30.5cm)
Unit Weight
67 lbs (30.5 kg)
Shipping Weight
75 lbs (34.1 kg)