McIntosh MC255 Power Amplifier

Instead of three separate meter windows each housing a single meter as found on the previous 5-channel home theater amplifier, the easy-to-read, 15” (38 cm) wide TripleView features three of Mc's traditional mechanical meters in a single meter enclosure.

While a totally new design, each of the three peak responding pointers in the TripleView meter have the same enticing motion that McIntosh meters are known for and function at the same high level as any of our meters. The enchanting look and welcoming glow of the TripleView meter is sure to draw interest from friends and family, but its trademarked blue lighting can be turned off so as not to compete with your TV or movie screen.

Besides the new TripleView meter, the MC255 has received many other performance upgrades to deliver an unforgettable cinema experience in your home theater. Filter capacity has been increased by 50% which has more than doubled dynamic headroom from 1.7dB to 3.6dB – a key feature in a home theater amplifier – as well as improving the performance of low frequencies.

When using just the front left, center and right channels, power output has been increased by 25% from 200 Watts per channel (WPC) to 250 WPC. When using all 5 channels, each will receive a healthy 200 WPC. Regardless of how many channels are used, the full 200 or 250 Watts is delivered to either 4 or 8 Ohm speakers via our Dynamic Power Manager® (DPM) technology.

The MC255 runs cool and quiet thanks to four McIntosh Monogrammed Heatsinks™ which are connected to advanced high current output transistors that efficiently and silently cool the amplifier; as a result, noisy cooling fans that can interfere with the movie soundtrack are not needed. A quiet, specially wound toroidal isolation power transformer also helps keep noise to a minimum.

Specification:

• Power Output per Channel: 3 Front Channels only: 250W @ 4 or 8 Ohms; All 5 Channels: 200W @ 4 or 8 Ohms
• Number of Channels: 5 (can also be used as a 2-zone amplifier with 3 channels in zone A and 2 channels in zone B)
• Total Harmonic Distortion: 0.005%
• S/N below rated output: 108dB
• Dynamic Headroom: 3.6dB
• Damping Factor: >70 @ 4 Ohms; >140 @ 8 Ohms
• Rated Power Band: 20Hz to 20kHz
• Frequency Response: +0, -0.25dB from 20Hz to 20,000Hz; +0, -3dB from 10Hz to 100,000Hz
• Remote Power Control: Yes, 5 or 3 + 2 Channel
• Multi-Channel DB25 Cable: No
• Speaker Binding Post Type: Standard
• Circuit Configuration: Push-Pull Complementary
• Circuit Design: Solid State
• Mono Bridge: No
• Mono Parallel: No
• Output Type: Direct Coupled with Dynamic Power Manager®
• Meters: TripleView™ Power Output Meter
• Meter Light Switch: Yes
• Balanced Input: 5
• Front Panel: Glass
• Illumination: Direct LED
• Chassis Style: Inverted
• Dimensions (W x H x D): 17-1/2" (44.5cm) x 9-7/16" (23.9cm) (including feet) x 21" (53.3cm) (including front panel and cables)
• Weight: 89.5 lbs (40.6 kg)
• Shipping Weight: 122.5 lbs (55.6 kg)

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