Channel summing circuits for mono signal distribution
Volume controls for each channel
Power Guard® and Sentry Monitor™
Delivers pristine music playback to multiple rooms for whole house audio.
The versatile MI1250 12-Channel Digital Amplifier can distribute pristine music playback to multiple rooms in your home. It delivers 50 Watts into 8 Ohm speakers or 90 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 plus 2-pole Phoenix style push-in speaker terminals for each channel. 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 MI1250 are:
Power Guard®signal overload technology that prevents overdriving thespeakers.
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 to automatically turn other connected McIntosh components on and off.
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 MI1250 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 localdealerto learn more about integrating the MI1250 into your custom whole house audio installation.
Power Output per Channel
50 Watts into 8 Ohms 90 Watts into 4 Ohms
Number of Channels
Total Harmonic Distortion
S/N below rated output
8 Ohms: 2.1dB 4 Ohms: 3.3dB
8 Ohms: >65 4 Ohms: >32
Rated Power Band
20Hz to 20kHz
+0, -0.5dB from 20Hz to 20,000Hz
Remote Power Control
Multi-Channel DB25 Cable
Speaker Binding Post Type
2-pole Phoenix style push-in speaker terminals
Closed loop digital switching
Meter Light Switch
Glass with removable rack mounting ears
Black painted steel
WEIGHTS & DIMENSIONS
Unit 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)