McIntosh MI128 8-Channel Power Amplifier

McIntosh MI128 8-Channel Digital Amplifier

Serious Power for Distributed Audio, Theater, and Stereo Systems

The McIntosh MI128 8-Channel Digital Amplifier is built for installations that need flexibility without giving up real amplifier performance.

With eight channels of Class D amplification, the MI128 can be used for whole-home audio, multi-room systems, home theater, or even dedicated stereo applications. It delivers 120 watts per channel into 8 Ohms or 150 watts per channel into 4 Ohms, giving it considerably more output capability than a typical distributed-audio amplifier.

Eight Channels of McIntosh Power

The MI128 uses highly efficient closed-loop digital switching amplifiers backed by robust power supplies to maintain strong, controlled output across all channels.

Because it is Class D, the amplifier runs efficiently enough that it does not require cooling fans under normal operating conditions. That is especially useful in equipment racks where heat, noise, and long-term reliability all matter.

Multi-color LED indicators on the front panel give quick visual confirmation of each channel’s operating status.

Flexible Enough for More Than Whole-Home Audio

A lot of multi-channel amplifiers are designed for one purpose. The MI128 is more adaptable.

Eight channels allow it to power:

Four stereo zones in a distributed audio system

Multiple home theater channels

Bi-amplified speaker configurations

Separate stereo systems

A mix of stereo and mono zones

That makes the MI128 a strong choice when the system may evolve over time or when a single amplifier needs to serve several different roles.

Installer-Friendly Connectivity

Each amplifier channel includes an unbalanced analog input and a 2-pole Phoenix-style push-in speaker connection.

Rear-panel volume controls allow each channel to be individually balanced during setup, which is especially helpful when different rooms use different speaker types or require different output levels.

The MI128 also includes two digital inputs, supporting either coaxial or optical connections. These digital signals can be bussed across multiple amplifier channels, making it easy to distribute one source to several zones.

Built-in channel summing also allows stereo sources to be converted to mono where needed.

BUS Connections Make Expansion Simple

McIntosh includes BUS inputs and outputs to make signal distribution across multiple channels—or even multiple MI128 amplifiers—much easier.