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Thank You
Your decision to own this McIntosh MC275 Stereo Power
Amplifier ranks you at the very top among discriminating
music listeners. You now have “The Best.” The McIntosh
dedication to “Quality,” is assurance that you will receive
many years of musical enjoyment from this unit.
Please take a short time to read the information in this
manual. We want you to be as familiar as possible with all
the features and functions of your new McIntosh.
Please Take A Moment
The serial number, purchase date and McIntosh Dealer
name are important to you for possible insurance claim or
future service. The spaces below have been provided for
you to record that information:
Serial Number: __________________________________
Purchase Date: __________________________________
Dealer Name: ___________________________________
Technical Assistance
If at any time you have questions about your McIntosh
product, contact your McIntosh Dealer who is familiar
with your McIntosh equipment and any other brands that
may be part of your system. If you or your Dealer wish
additional help concerning a suspected problem, you can
receive technical assistance for all McIntosh products at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-1545
Fax: 607-724-0549
Customer Service
If it is determined that your McIntosh product is in need of
repair, you can return it to your Dealer. You can also return
it to the McIntosh Laboratory Service Department. For
assistance on factory repair return procedure, contact the
McIntosh Service Department at:
McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: 607-723-3515
Fax: 607-723-1917
Copyright 2006 © by McIntosh Laboratory, Inc.
Table of Contents
General Information
Safety Instructions .......................................................................2
Thank You and Please Take a Moment .......................................3
Technical Assistance and Customer Service ..............................3
Table of Contents .........................................................................3
Important Information .................................................................3
Connector Information ................................................................4
Introduction .................................................................................4
Performance Features ..................................................................4
Dimensions ..................................................................................5
Installation of Tubes and Tube Cover ..........................................6
Location and Ventilation .............................................................7
Connections:
Left Side Panel Connections .......................................................8
Right Side Panel Connection and Fuse Holder ...........................9
How to Connect for Stereo ........................................................10
How to Connect for Mono Parallel ............................................11
Left Side Panel Controls and Switches ......................................12
Operation:
How to Operate ..........................................................................13
Additional Information:
Specifications ............................................................................14
Packing Instructions ..................................................................15
1. Caution: To prevent electrical shock make sure that
the AC POWER CORD IS NOT CON-
NECTED TO THE MC275 when inserting
or removing Vacuum Tubes, as there are
hazardous voltages present at the pins of
the Tube Sockets.
2. When Vacuum Tubes are installed or removed make
sure to reattach the Tube Cover to the MC275 Chassis.
3. If the MC275 has been On, please allow the Hot Vacu-
um Tubes to cool first before removing them.
4. For additional connection information, refer to the
owner’s manual(s) for any component(s) connected to
the MC275.
5. The Main AC Power going to the MC275 and any other
McIntosh Component(s) should not be applied until all
the system components are connected together. Failure
to do so could result in malfunctioning of some or all of
the system’s normal operations.