Description
The McIntosh MC255 is a beautifully engineered 5‑channel power amplifier that brings unmistakable McIntosh performance, build quality, and musical authority to home theatre and multi‑channel audio systems.
Designed to deliver clean, dynamic power across all channels, the MC255 provides the foundation for a cinematic experience that is both immersive and refined.
Rated at 250 watts per channel into 4 ohms or 200 watts per channel into 8 ohms, the MC255 delivers ample headroom and control for demanding loudspeakers. McIntosh’s advanced Dynamic Power Manager® technology ensures optimal performance across varying speaker impedances, maintaining clarity and composure even during complex, high‑impact passages.
Give your home theater the power it deserves with the MC255 5-Channel Home Theater Power Amplifier. The MC255 features our striking new TripleView™ Power Output Meter that independently indicates the real time power reading of the amplifier’s three front channels. Instead of three separate meter windows each housing a single meter as found on our previous 5-channel home theater amplifier, the easy-to-read, 15” (38 cm) wide TripleView features three of our traditional mechanical meters in a single meter enclosure.
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.
MCINTOSH MC255 5-CHANNEL SOLID STATE AMPLIFIER 3X250W/5X200W
250 Watts x 3 Channels; 200 Watts x 5 Channels
TripleView™ Power Output Meter
More than 100% increase in Dynamic Headroom
Dynamic Power Manager®; Power Guard®
Designed for home theaters
SPECIFICATIONS
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
ALS
