MC275 Amplifiers

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.
 
McIntosh patented, gold plated, 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 (see below). 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.
 
 
MC275 Tube Warm Up 
Animation of tube warm up sequence.
 

Electronic Specifications

Power Output per Channel

75W @ 4, 8 or 16 Ohms

Number of Channels

2

Total Harmonic Distortion

0.5%

S/N below rated output

105dB

Dynamic Headroom

1.2dB

Damping Factor

22

Rated Power Band

20Hz to 20kHz

Frequency Response +0,-0.25dB

20Hz to 20kHz

Frequency Response -3dB

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

No

Mono Parallel

Yes, 150W @ 2, 4 or 8 Ohms

Autoformer

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

Gold Plated Binding Posts

Yes, New Style McIntosh

Weights & Dimensions

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)

Weight

67 lbs (30.5 kg)

Shipping Weight

75 lbs (34.1 kg)

Product Literature


MC275 Power Amplifier Brochure (2.72 MB) (10/4/2012) Download


User Documents


MC275 Power Amplifier Owner's Manual (15.91 MB) (8/2/2012) Download


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