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McIntosh MC275

McIntosh MC275
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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com
MC275 50
th
Anniversary
Tube Power Amplier
Owner’s Manual

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McIntosh MC275 Specifications

General IconGeneral
Damping factor20
Amplifier class-
Frequency range10 - 70000 Hz
Output impedance16 Ω
Audio output channels2.0 channels
Peak power per channel75 W
Signal-to-Noise Ratio (SNR)100 dB
Total Harmonic Distortion (THD)0.50 %
RMS power output per channel (2 Ohm)150 W
XLR inYes
Audio (L/R) in2
Audio (L/R) out6
Speakers connectivity typeBinding post
PurposePerformance/stage
Product colorBlack, Silver
Connectivity technologyWired
Maximum current3.6 A
AC input voltage120 V
AC input frequency50 - 60 Hz
Package weight34100 g
Weight and Dimensions IconWeight and Dimensions
Depth304.8 mm
Width419.1 mm
Height209.6 mm
Weight30500 g

Summary

Safety Warnings and Precautions

Unpacking and Initial Setup

Foam Insert Removal

Critical step to remove foam protecting vacuum tubes before connecting power.

MC275 Unpacking Procedure

Controls and Connections

Stereo Operation: Connections

Output Terminals Connection

Steps for connecting loudspeaker hookup cables to the output terminals.

Stereo Connection Procedure

Step-by-step guide for setting up stereo audio connections to the amplifier.

Stereo Operation: Impedance

Monaural Operation: Connections

Output Terminals Connection (Mono)

Steps for connecting loudspeaker hookup cables in mono mode.

Monaural Connection Setup

Guidance on using jumper bars and connecting for mono parallel mode.

Monaural Operation: Impedance

Operating the MC275

Sentry Monitor Protection

Details on the tube protection circuitry and how to reset it.

Technical Specifications

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