• 120 Watts into 8 Ohms
• 150 Watts into 4 Ohms
• 2U rack mountable
• 8-Channel amplifier for distributed audio, home theatre or stereo listening
• Channel summing circuits for easy mono signal distribution

The versatile MI128 8-Channel Digital Amplifier can be used in many applications ranging from distributed audio to home theatre to stereo listening. It delivers 120 Watts into 8 Ohm speakers or 150 Watts into 4 Ohm speakers via highly sophisticated closed loop digital switching amplifiers that are paired with extremely robust power supplies to produce performance levels that are rarely achieved in distributed audio.

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.

On the front panel, multi-colour LED indicators display the status of each channel. On the back are unbalanced inputs for each channel plus 2-pole Phoenix style push-in speaker terminals. Also located on the back are volume controls for volume balancing, along with 2 digital audio inputs (either coax or optical) that can be bussed, and channel summing circuits for easy mono signal distribution.

Other features included on the MI128 are: Loudspeaker Guard signal overload technology that prevents overdriving the speakers; our Sentry Monitor™ short-circuit protection circuit that disengages the output stage before current exceeds safe operating levels and then resets automatically when operating conditions return to normal; BUS input & outputs to easily distribute a stereo signal to multiple outputs and/or multiple amplifiers; individual channel inputs; 12 Volt triggering capabilities; and eco-friendly on/off signal sensing that turns the unit off if no input signal has been detected for a set amount of time or automatically turns the amp on when it senses a signal.

The MI128 includes many McIntosh design cues including a black glass front panel housing an illuminated McIntosh logo, along with a familiar form factor that is highlighted with silver trim. Contact your local dealer to learn more about integrating the MI128 into your custom audio installation.

Specifications

• 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

  CONTROL

  • Remote Power Control

    Yes

  • Multi-Channel DB25 Cable

    N/A

  CONNECTIVITY

  • Speaker Binding Post Type

    2-pole Phoenix style push-in speaker terminals

  GENERAL SPECIFICATIONS

  • 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

  WEIGHTS & DIMENSIONS

  • Dimensions (W x H x D)

    17-1/2" (44.45cm) (19" (48.3cm with mounting ears)) x 4-5/16" (11cm) (including feet) x 21" (53.3cm) (including front panel and cables)

  • Weight

    22 lbs (10 kg)

  • Shipping Weight

    38.4 lbs (17.4 kg)