5
Now you can take advantage of traditional McIn-
tosh standards of excellence in the MHA100 Head-
phone Amplifier. The Power Amplifier section of the
MHA100 will drive Headphones or a pair of quality
Loudspeakers to a high level of performance.
The flexible Preamplifier section provides con-
nections for various input sources, including Digital
sources and music streaming from the Internet via an
USB Computer connection.
The MHA100 reproduction is sonically transparent
and absolutely accurate. The McIntosh Sound is “The
Sound of the Music Itself.”
Introduction
Performance Features
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The MHA100 consists of a 50 watts per channel stereo
Power Amplifier with less than 0.005% distortion.
The McIntosh MHA100 is designed for connection of
a single 8 ohm Loudspeaker per channel. The Power
Amplifier uses ThermalTrak
1
Output Transistors for
lower distortion and cool operation.
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The MHA100 is the first McIntosh Amplifier using a
specially designed Autoformer for Headphones. There
are three selectable impedances ranges, allow connec-
tion of Headphones from 8 ohms thru 600 ohms.
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TM
for Headphones
The MHA100 Headphone Crossfeed Director Cir-
cuitry (HXD
TM )
improves the sound localization for
Headphone Listening. HXD
TM
restores the direction-
ality component of the spatial sound stage normally
heard with Loudspeaker listening.
1
ThermalTrak™ and ON Semiconductor are trademarks of Semi-
conductor Components Industries, LLC
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The MHA100 has a Front Panel one-quarter inch
Headphone Jack for private listening. Loudspeaker
Listening is automatically switched Off when Head-
phones are connected.
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McIntosh Sentry Monitor power output stage protec-
tion circuits ensure the MHA100 will have a long and
trouble free operating life. The Sentry Monitor also
protects the Headphones in the event of an imped-
ance mismatch. Built-in Thermal Protection Circuits
guard against overheating. Direct Current Detection
and Protection is provided for both Headphones and
Loudspeakers
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The patented McIntosh Power Guard circuit prevents
amplifier clipping and protects your valuable Head-
phones and Loudspeakers.
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The Preamplifier uses Logic Circuits controlling
Electromagnetic Switches on all inputs and operating
functions for reliable, noiseless, distortion free switch-
ing. There is a Balanced Input for connection of a
source component.
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The MHA100 has Coaxial, Optical, Balanced Digi-
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PCM Signals from an external source. The MHA100
upsamples the Digital Signal to 192kHz with 32Bit
resolution before the Digital to Analog process begins.
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The Front Panel Display indicates source selection,
volume levels, trim settings and setup functions.
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The Illuminated Power Output Meters on the
MHA100 are peak responding, and indicate the output
of the amplifier.
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The Power Control Output connection provides conve-
nient Turn-On/Off of McIntosh Source Components.
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The large Power Transformer, multiple large filter
capacitors and regulated Power Supply ensures stable
noise free operation even though the power line varies.
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McIntosh Patented gold plated output terminals deliver
high current output. They accept large diameter wire
and spade lugs. Banana plugs may also be used only in
the United States and Canada.
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The MHA100 has the famous McIntosh Illuminated
Glass Front Panel and Stainless Steel Super Mirror
Finish Chassis. This ensures the pristine beauty of the
MHA100 will be retained for many years.
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The even Illumination of the Front Panel is accom-
plished by the combination of custom designed Fiber
Optic Light Diffusers and extra long life Light Emit-
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Introduction and Performance Features
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