5
Introduction
Now you can take advantage of traditional McIntosh
standards of excellence in the MA12000 Integrated
Amplifier. The Power Amplifier section of the
MA12000, with a power output of 350 watts per
channel, will drive a pair of quality Loudspeakers to a
high level of performance.
The flexible Preamplifier section features four AX7A
Tubes and provides connections for various input
sources and may also be used to drive an external
Power Amplifier(s).
The MA12000 reproduction is sonically transparent
and absolutely accurate. The McIntosh Sound is “The
Sound of the Music Itself.”
Performance Features
• Power Output with Patented Autoformer
The MA12000 consists of a 350 watts per channel
Power Amplifier with less than 0.005% distortion.
The McIntosh designed and manufactured Autoformer
allows connection of 2, 4 or 8 ohm Loudspeakers.
The Power Amplifier uses ThermalTrak
™
1
Output
Transistors to minimize distortion and operating
temperature.
• Sentry Monitor and Thermal Protection
McIntosh Sentry Monitor power output stage
protection circuits ensure the MA12000 will have a
long and trouble free operating life. Built-in Thermal
Protection Circuits guard against overheating.
• Power Guard
The patented McIntosh Power Guard circuit prevents
amplifier clipping and protects your valuable
Loudspeakers. Tubes will glow amber when engaged.
1
ThermalTrak™ and ON Semiconductor are trademarks of
Semiconductor Components Industries, LLC
• Electronic Switching and Balanced Connections
The Preamplifier uses Logic Controlled
Electromagnetic Switches on all inputs and operating
functions for reliable, noiseless, signal switching.
There is a Balanced Input for connection of a source
component.
• Digital Audio Inputs
The Digital Inputs decode PCM and DSD Signals
from external sources. Coaxial, Optical and HMDI
Inputs process Digital Signals up to 192kHz with
24-Bit resolution. The Digital MCT Input Circuitry
directly decodes SACD/CD signals from an external
Transport component. The USB Input Port can
process streaming audio with 32-bit resolution up to
384kHz sampling rate. The Input Port can also process
DSD512 as well as DXD 24-bit signals up to the same
384kHz sampling rate.
• Moving Coil and Moving Magnet Phono Inputs
The MA12000 has two precision Phono Preamplifier
Circuits for Moving Coil and Moving Magnet Phono
Cartridges. Both circuits use the latest designs to
provide the lowest possible noise, distortion and
flat frequency response. The MC and MM Phono
Cartridge Inputs have selectable loading.
• Eight Band Equalizer
The Equalizer Controls provide ±12dB signal gain at
center frequencies of 25, 50, 100, 200, 400, 1kHz,
2.5kHz and 10kHz. There is also an Equalizer Bypass
Mode to remove the Equalizer from the Signal Path of
any selected input.
• Multifunction Display and Power Meters
The Front Panel Display indicates source selection,
volume levels and setup functions. The Illuminated
Power Output Meters are peak responding, and
indicate the power output of the amplifier.
• Power Control Output and Trigger Assignment
A Power Control connection for convenient Turn-On
of McIntosh Power Amplifiers, Source Components
and Accessories is included. The Power Control
Trigger Ouputs may be assigned to activate when a
given Input/Output is selected.
• PassThru Mode
The Automatic PassThru Mode allows the MA12000
to become part of a Multichannel Sound System for
DVD-Audio, SACD and Home Theater Movies.
• Remote Control
The Data Ports together with the supplied Remote
Control provide control of McIntosh Source
Components connected to the MA12000.
• Special Power Supply
The large Power Transformer, multiple filter
capacitors with 280 Joules of Energy Storage and
regulated Power Supply, ensures stable noise free
operation even if the AC power line fluctuates.
• Solid Cinch™ Speaker Binding Posts
McIntosh Patented gold plated Binding Post deliver
high current output. They securely accept large
diameter wire and spade lugs. Banana plugs may also
be used but only in the United States and Canada.
• Glass Front Panel and Super Mirror Chassis
Finish
The famous McIntosh Illuminated Glass Front Panel
uses long life Light Emitting Diodes (LEDs) and the
Stainless Steel Chassis with Super Mirror Finish
ensures that the MA12000 will retain its pristine
beauty for many years.
