5
Introduction
Performance Features
Introduction and Performance Features
The McIntosh C2500 Tube Preamplifier is one of the
finest Preamplifiers ever created with connections for
both analog and digital sources. The C2500 Outputs
have the ability to drive multiple Power Amplifiers.
The C2500 reproduction is sonically transparent and
absolutely accurate. The McIntosh Sound is “The
Sound of the Music Itself.”
• Electromagnetic Input Switching with Level Trim
Adjustment
Digital Logic integrated circuits drive Electromag-
netic Switches on all Inputs and operating functions
for reliable, noiseless, distortion free switching. All
eight Inputs on the C2500 can be matched in level, so
there are no abrupt changes in volume levels between
the different Inputs.
• Moving Coil and Moving Magnet Phono Inputs
The C2500 contains two different precision Phono
Preamplifier Circuits. One for low output Moving Coil
Phono Cartridges with selectable resistance loading,
the other is for Moving Magnet Cartridges with select-
able capacitive loading. Both circuits use the latest
designs to provide the lowest possible noise and dis-
tortion. The RIAA Correction Equalization Circuitry
utilizes close tolerance resistors and capacitors for an
extremely flat frequency response.
• Digital Audio Inputs
The C2500 has Coaxial, Optical and USB Digital In-
puts to Decode PCM Signals from an external source.
The C2500 Up Samples the Digital Signal to 192kHz
with 32Bit resolution before the Digital to Analog
process begins.
• Balanced Inputs
The Balanced Inputs allow the connection of a source
component using long cable lengths without a loss in
sound quality.
• Precision Tracking Volume Control
Volume levels are controlled by a new Multi-Stage
Precision Digitally Controlled Attenuator System with
superb tracking accuracy.
• Variable Rate Volume and Balance Controls
The C2500 Tube Preamplifier’s Volume and Balance
Control Circuitry provides an ideal rate of change with
control rotation.
• Electronic Tone Controls with Bypass
Electronic Bass and Treble Circuitry allow volume
level adjustments for low and high frequencies in
precise one Decibel Steps. The C2500 remembers the
Tone Control Circuitry Bypass Option for each input.
• Alphanumeric Fluorescent Display
The Front Panel Information Display indicates the
Source Selection, Volume/Balance Levels and Setup
Mode Selections. The display intensity is adjustable.
• Processor Loop
A Processor Loop is provided for connection of an
external analog signal processor. The Processor Loop
can be switched in or out of the signal path of any as-
signed Input.
• Pass-Thru Mode
The Automatic Pass-Thru Mode allows the C2500
to become part of a Multichannel Sound System for
DVD-Audio, SACD and Home Theater Movies.
• Remote Control with External Sensor Input
The Remote Control provides control of the C2500
operating functions and McIntosh Source Components
connected to it. Enjoy your McIntosh System from
another room in your home by connecting an external
sensor.
• 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 Trig-
ger Ouputs may be assigned to activate when a given
Input is selected.
• Special Power Supply
Fully regulated Power Supplies and a special R-Core
Power Transformer ensure stable noise free operation
even though the power line varies.
• Fiber Optic Solid State Front Panel Illumination
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-
ting Diodes (LEDs).
• Glass Front Panel and Super Mirror Chassis
Finish
The famous McIntosh Illuminated Glass Front Panel
and the Stainless Steel Chassis with Super Mirror
Finish ensures the pristine beauty of the C2500 will be
retained for many years.
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