McIntosh MC257 Home Theatre Power Amplifier


Bring your home theater dreams to life with the MC257 7-Channel Power Amplifier.
Experience the latest blockbusters along with your favorite movies like never before in your home theater with the sound quality and power only McIntosh can deliver.

The MC257 can be utilized in many ways: it can power a 7-channel home theater by itself; it can be paired with either our MI128 or MI254 digital amplifiers in home theaters that have more than 7-channels; or it can be used in 5-channel home theaters with 2 of its channels available to power a second audio zone in your home.


Electronic Specifications

  • Power Output Per Channel:  3 Front Channels only: 250W @ 4 or 8 Ohms;  All 7 Channels: 200W @ 4 or 8 Ohms
  • Number Of Channels:  7 (can also be used as a 2-zone amplifier with 5 channels in zone A and 2 channels in zone B)
  • Total Harmonic Distortion:  0.005%
  • S/N Below Rated Output:  108dB
  • Dynamic Headroom:  3.3dB
  • 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, 7 or 5 + 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:  Yes
  • Meter Light Switch:  Yes
  • Balanced Input:  7
  • Front Panel:  Glass
  • Illumination:  Direct LED
  • Chassis Style:  Polished stainless steel & black painted steel
  • Dimensions (W x H x D):  445 x 239 x 533 mm (including feet, front panel and cables)
Additional Information
Weight 43 kg
Dimensions (DxWxH) 533 × 445 × 239 mm