McIntosh MI128 Distribution Amplifier


Power amplifiers are the driving force behind any great home audio system.

The versatile MI128 8-Channel Digital Amplifier can be used in many applications ranging from distributed audio to home theater to stereo listening.

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.

McIntosh amplifiers blend eye-catching aesthetics, power and sonic integrity in a way that has been capturing the imagination of music lovers and home theater enthusiasts for decades.


Electronic Specifications

  • Power Output Per Channel:  120 Watts into 8 Ohms; 150 Watts into 4 Ohms
  • Number of Channels:  8
  • Total Harmonic Distortion:  0.05%
  • S/N Below Rated Output:  95dB
  • Dynamic Headroom:  8 Ohms: 2.1dB; 4 Ohms: 3.3dB
  • Damping Factor:  8 Ohms: >65; 4 Ohms: >32
  • Rated Power Band:  20Hz to 20kHz
  • Frequency Response:  +0, -0.5dB from 20Hz to 20,000Hz


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


  • Speaker Binding Post Type:  2-pole Phoenix style push-in speaker terminals


  • Circuit Configuration:  Closed loop digital switching
  • Circuit Design:  Digital
  • Mono Bridge:  N/A
  • Mono Parallel:  N/A
  • Output Type:  Direct Coupled
  • Meters:  No
  • Meter Light Switch:  No
  • Balanced Input:  0
  • 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 kg
Dimensions (DxWxH) 533 × 444.5 × 110 mm