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Overview

The McIntosh MC303 is our most powerful multi-channel amplifierto 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 MC312 or MC152amplifiers 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 XRT1.1K or XRT2.1K.

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 both balanced cables 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.

Specifications

Electronic Specifications

FTC Power Output Rating

300 W

Power Output per Channel

300 W into 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 20kHz

+0, -3dB from 10Hz to 100kHz

Control

Remote Power Control

Yes

Multi-Channel DB25 Cable

No

General Specifications

Circuit Configuration

Push-Pull Complementary Autoformers

Circuit Design

Solid State

Mono Bridge

No

Mono Parallel

No

Output Type

Autoformer™

Meters

Yes

Meter Light Switch

Yes

Balanced Input

Yes

Front Panel

Glass with handles

Illumination

LED Fiber Optic

Chassis Style

Inverted

Connectivity

Speaker Binding Post Type

Yes

Weights & Dimensions

Unit 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)

Unit Weight

155 lbs (70.3 kg)

Shipping Weight

180 lbs(81.6 kg)

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FAQs

Please read our FAQs page to find out more.

Do you price match?

Yes. We match any authorised dealer, including big-box retailers. If you find the same product at a lower price, contact us and we'll match it.

Do you offer free shipping?

Yes — free shipping on every order, with 2-day delivery available on most products. Easy returns and exchanges are included.

Where is your showroom?

We're at 6362 Alder Drive, Houston, Texas. The showroom lets you hear and compare reference-level systems in person before making any decisions. If you're considering a larger purchase or installation, it's well worth the visit.

Can I buy online without visiting the showroom?

Yes. The full product range is available through the online store with free nationwide shipping. For more complex system builds, speaking with one of our advisers first tends to lead to a better result.

Do you offer financing?

Yes. Special financing is available through the BrandSource Credit Card for qualifying purchases, allowing you to spread payments over time with no annual fee. Promotional rebate savings are also available periodically. See the financing page for full details.

Do you install systems as well as sell equipment?

Yes — installation is central to what we do. We design and install whole-home audio and video, home theaters, media rooms, outdoor audio, lighting and motorised shades, and full smart home automation.

Do you provide support after installation?

Yes. We provide ongoing service and support to ensure systems continue performing as intended — not just on installation day, but over the long term.