McIntosh MA-6600 Brochure

MA6600

legendary

integrated amplifier

The MA6600 integrated amplifier teams a very low distortion, full function preamplifier
with a potent 200 Watt per channel autoformer-coupled amplifier. The ability to accept
an optional AM/FM/HD tuner module, the TM2, enables the MA6600 to become the first
stereo receiver offered by McIntosh in over 15 years.

The preamplifier stage supports 1 balanced and 7 unbalanced inputs and the input
names are user configurable. A Variable Rate Volume (VRV) control with Post Attenuator,
a McIntosh innovation, provides exceptionally accurate tracking and very low noise
operation. Bass, treble and balance functions are all digitally controlled and adjustable
via the MA6600 front panel or IR remote and bass and treble settings are automatically
memorized independently for each input selection. All signal routing is accomplished
with highly reliable, sealed electromagnetic switches. A ¼” front panel jack accesses
a dedicated, low impedance headphone amplifier for use with dynamic headphones.
Two switched, unbalanced line outputs are available for multi-zone use.

The MA6600 power amplifier utilizes a 2-stage differential-balanced voltage amplifier
coupled to a push-pull current amplifier and Output Autoformer. This topology exhibits
extremely low noise and distortion along with high current capability and is designed
to drive a wide range of loudspeakers to sound their very best. The output Autoformer
enables the MA6600 to respond with full rated power and low distortion regardless of
the load connected and delivers 200 watts per channel into 8, 4 or 2 ohms.

“the latest McIntosh
engineering, applied
to an audiophile
focused design”

200 Watts / Channel

Exclusive McIntosh
Power Assurance System

High Output Current Capability

Fiber-Optic Illuminated
Glass Front Panel

¼” Headphone Jack

M a6600

integrated amplifier

EXCLUSIVE MCINTOSH
POWER ASSURANCE SYSTEM

A collection of technologies that enhance
performance and reliability while
protecting the amplifier and loudspeakers.

POWER OUTPUT

200 watts is the minimum sine wave
continuous average power output per
channel, both channels operating

INPUT IMPEDANCE

High Level, 20K ohms
Phono, 47K ohms; 65pF
Power Amp In, 10K ohms

POWER GUARD

®

A waveform comparison circuit
continuously monitors both input and
output signals. Power Guard dynamically
adjusts the input level to avoid clipping
while preventing harsh sounding distortion.

ELECTRONIC SWITCHING AND
BALANCED CONNECTIONS

The preamplifier uses Logic Circuits
controlling Electromagnetic Switches
on all inputs and operating functions
for reliable, noiseless distortion free
switching. There are two Balanced Inputs
for connection of source components and
a Balanced Preamplifier output for driving
an external Power Amplifier

POWER CONTROL AND
REMOTE CONTROL

The power control output connection
provides convenient Turn-On/Off of
McIntosh Source components. The
Data Ports together with the supplied
Remote Control provides control of
McIntosh Source components
connected to the MA6600.

OUTPUT LOAD IMPEDANCE:

2, 4 or 8 ohms

RATED POWER BAND:

20Hz to 20,000Hz

TOTAL HARMONIC DISTORTION

0.005% maximum with both channels
operating from 250 milliwatts to rated power,
20Hz to 20,000Hz

DYNAMIC HEADROOM 2.0dB

FREQUENCY RESPONSE

+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz

PREAMPLIFIER OUTPUT

1 AND 2 (FOR RATED INPUT):

1.4V unbalanced (8V Maximum)

SENSITIVITY (FOR RATED OUTPUT)

High Level, 250mV unbalanced, 500mV balanced
Phono, 2.5 mV; Power Amp In, 1.4V

SIGNAL TO NOISE RATIO (A-WEIGHTED)
High Level, 92dB below rated output
Phono, 84dB below 5mV input
Power Amplifier, 115 below rated output

INTERMODULATION DISTORTION

0.005% maximum, if the instantaneous peak
power is 400 watts or less per channel with
both channels operating for any combination
of frequencies from 20Hz to 20,000Hz

WIDE BAND DAMPING FACTOR: > 40

MAXIMUM INPUT SIGNAL

High Level, 8V unbalanced, 16V balanced
Phono, 80mV: Power Amplifier In, 16V

PREAMPLIFIER OUTPUT IMPEDANCE

220 ohms

VOLTAGE GAIN

High Level to Rec Output: 0dB
High Level to Output 1 and 2: 15dB
Phono to Rec Output: 40dB
Phono to Output 1 and 2: 55dB
Power Amplifier: 29dB

TONE CONTROLS

Bass Control ±12dB (1dB steps) @ 30Hz
Treble Control ±12dB (1dB steps) @ 10,000Hz

POWER REQUIREMENTS
100 Volts, 50/60Hz at 5.2 amps
110 Volts, 50/60Hz at 4.8 amps
120 Volts, 50/60Hz at 4.4 amps
220 Volts, 50/60Hz at 2.45 amps
230 Volts, 50/60Hz at 2.35 amps
240 Volts, 50/60Hz at 2.25 amps
Standby: Less than 1 watt

OVERALL DIMENSIONS (H x W x D including
front panel, knobs, feet and cables):

9-7/16” (23.97cm) x 17-1/2” (44.45cm)
x 22” (55.88cm)

WEIGHT
75 pounds (34.1 kg) net, 93 pounds (42.3 kg)
in shipping carton

WATTMETER

Swift, accurate response reveals program
peaks so staying within the power limits
of your loudspeakers is easy.

FOR THE CONSUMER’S
PROTECTION

In order to ensure the highest level of
customer satisfaction, “new” McIntosh
products may only be purchased over-the­counter or delivered and installed by an
Authorized McIntosh Dealer.

McIntosh products that are purchased
over the Internet, by phone or mail order
are presumed to be “used” and do
not qualify for any McIntosh Warranty.
McIntosh does not warrant, in any
way, products that are purchased from
anyone who is not an Authorized Dealer
or products that have had their serial
number altered or defaced.

To experience the legendary performance of McIntosh, please call on us at 1-800-538-6576

35010300 MA6600

www.mcintoshlabs.com