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The versatile MI128 8-Channel Digital Amplifier can be used in many applications, ranging from distributed audio to home theater to stereo listening.
The MI128 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-color 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.
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 us today to learn more about integrating the MI128 into your custom audio installation!
Loudspeaker Guard signal overload technology that prevents overdriving the speakers
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
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.
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
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): 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)