MC303 Amplifiers

The McIntosh MC303 is our most powerful multi-channel amplifier to date, providing 300 watts into each of 3 channels. It features our renowned Autoformer, which allows its full 300 watts of power to be delivered into 2, 4 or 8 ohm speakers with the lowest noise and distortion performance possible.

The MC303 was designed with the intent to drive a home theater’s front left, front right and center channels. As most of a movie’s soundtrack is delivered by these three channels, the powerful MC303 provides all the power needed for an amazing in-home theater experience. For surround channels, combine the MC303 with our MC302 or MC152 amplifiers and fully immerse yourself in your movie collection. For music lovers, the MC303 can be used in tri-amping configurations on compatible speakers, such as our XRT1K or XRT2K.

The MC303 shares many notable McIntosh technologies that are found in our other home audio and home theater products, including Power Guard® that prevents over-driving of the amplifier and the resulting harsh sounding clipping that could damage your speakers. Sentry Monitor is our fuse-less short-circuit protection circuit that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal. Inputs for balanced and unbalanced cables are available to provide flexibility in connecting to the rest of your system. A triple bank of blue watt meters provides instant recognition of power output (the meters may be switched off for theater use if they conflict with the television or movie screen).

Aesthetically, the MC303 is every bit as McIntosh as any of our products. A polished stainless steel chassis, classic black glass front panel, knobs and custom machined aluminum handles all come standard. Contact your local dealer​ to learn more.

Electronic Specifications

Power Output per Channel

300W @ 2, 4 or 8 Ohms

Number of Channels

3

Total Harmonic Distortion

0.005%

S/N below rated output

112dB

Dynamic Headroom

1.8dB

Damping Factor

>40

Rated Power Band

20Hz to 20kHz

Frequency Response

+0, -0.25dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz

Control

Remote Power Control

Yes

Multi-Channel DB25 Cable

No

General Specifications

Circuit Configuration

Push-Pull Complementary Autoformers

Circuit Design

Transistor

Mono Bridge

No

Mono Parallel

No

Autoformer

Yes

Meters

Yes

Meter Light Switch

Yes

Balanced Input

Yes

Front Panel

Glass with handles

Illumination

LED Fiber Optic

Chassis Style

Inverted

Gold Plated Binding Posts

Yes

Weights & Dimensions

Dimensions (W x H x D)

17-3/4" (45.09cm) x 12-3/8" (31.43cm) (including feet) x 22" (55.88cm) (including front panel and cables)

Weight

155 lbs (70.3 kg)

Shipping Weight

180 lbs(81.6 kg)

Product Literature


MC303 Power Amplifier Brochure (1.29 MB) (2/24/2011) Download


User Documents


MC303 Power Amplifier Owner's Manual (8.58 MB) (3/2/2011) Download


MC303 Power Amplifier Connection Diagram (1.31 MB) (3/2/2011) Download


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