McIntosh MC255 Home Theatre Power Amplifier


Give your home theater the power it deserves with the MC255 5-Channel Home Theater Power Amplifier.

The MC255 can be used to power a conventional 5-channel home theater; it can be paired with either our MI128 or MI254 digital amplifiers in home theaters that have additional surround sound speakers for use with object-based 3D audio formats such as Dolby® Atmos, DTS:X™ and Auro-3D®; or it can be used in a two zone configuration with the three front channels used at 250 WPC in one zone and the two surround sound channels used at 200 WPC in a second audio zone in your home.


Electronic 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


  • 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):  445 x 239 x 533 mm (including feet, front panel and cables)
Additional Information
Weight 40.6 kg
Dimensions (DxWxH) 533 × 445 × 239 mm