McIntosh MI254 Distribution Amplifier


The MI254 4-Channel Digital Amplifier is a versatile multi-channel amplifier ideal for use in distributed audio, home theater or 2-channel stereo playback.

It has installer-friendly physical dimensions and is 2U rack mountable via the included mounting ears (the mounting ears are removable for non-rack installations).
As a highly efficient Class D amplifier, it does not require noisy cooling fans to maintain nominal operating temperature.

In addition to distributed audio use, the MI254 is well suited for home theaters to drive surround sound speakers and could be integrated into virtually any existing home theater system.


Electronic Specifications

  • Power Output Per Channel:  250 Watts into 8 Ohms; 300 Watts into 4 Ohms
  • Number Of Channels:  4
  • Total Harmonic Distortion:  0.025%
  • S/N Below Rated Output:  100dB
  • Dynamic Headroom:  8 Ohms: 2.5dB; 4 Ohms: 3.5dB
  • Damping Factor:  8 Ohms: >85; 4 Ohms: >45
  • Rated Power Band:  20Hz to 20kHz
  • Frequency Response:  +0, -0.9dB from 20Hz to 20,000Hz


  • Remote Power Control:  Yes
  • Multi-Channel DB25 Cable:  N/A


  • Speaker Binding Post Type:  Standard


  • Circuit Configuration:  Closed loop digital switching
  • Circuit Design:  Digital
  • Mono Bridge:  N/A
  • Mono Parallel:  N/A
  • Output Type:  Direct Coupled
  • Meters:  Yes
  • Meter Light Switch:  No
  • Balanced Input:  4
  • Front Panel:  Glass with removable rack mounting ears
  • Illumination:  Direct LED
  • Chassis Style:  Black painted steel
  • Dimensions (W x H x D):  444.5 (483 with mounting ears) x  110 x 533 mm (including feet, front panel and cables)
Additional Information
Weight 10.7 kg
Dimensions (DxWxH) 533 × 444.5 × 110 mm