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MI1250 12-Channel Digital Amplifier

3 Year Limited Warranty

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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.

McIntosh MI347 Amplifier — Front and back of Rack Mounting Bracket.

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 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 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.

McIntosh MX100 A/V Processor, MI347 Amplifier, MI254 Amplifier — Typical McIntosh custom install products installed in an A/V rack using our Rack Mounting Brackets.

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 local dealer to learn more about integrating the MI1250 into your custom whole house audio installation.

Specifications
Electronic Specifications
- FTC Power Output Rating
  
  50 W
- Power Output per Channel
  
  50 W into 8 ohms
  90 W into 4 ohms
- Number of Channels
  
  12
- 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 20kHz
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
- BTU Rating
  
  900 BTU/h
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)
- Unit Weight
  
  22 lbs (10 kg)
- Shipping Weight
  
  38.4 lbs (17.4 kg)

Downloads

Product Literature	User Documents
MI1250 Power Amplifier Brochure (1.35 MB)	MI1250 Power Amplifier Owner's Manual (5.53 MB)

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