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The MI254 4-Channel Digital Amplifier is a versatile, multi-channel amplifier ideal for use in distributed audio, home theater, or 2-channel stereo playback.
The MI254 delivers 250 watts into 8-ohm speakers or 300 watts into 4-ohm speakers via its highly sophisticated closed-loop digital switching amplifiers. These amplifiers are paired with extremely robust power supplies that produce performance levels 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. In addition to distributed audio use, the MI254 is well-suited for home theaters to drive surround sound speakers and could be integrated into virtually any existing home theater system.
On the front panel are two blue McIntosh Watt Meters that display the summed power output of channels 1 + 2 and channels 3 + 4. Multi-color LED indicators display the status of each channel. The back panel includes both a balanced and unbalanced input for each channel along with McIntosh's standard 5-way speaker binding posts.
The MI254 includes many McIntosh design cues including a black glass front panel, blue watt meters, an illuminated McIntosh logo, and a familiar form factor highlighted by silver trim.
Contact us today to learn more about integrating the MI254 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: 250 Watts into 8 Ohms / 300 Watts into 4 Ohms
Number of Channels: 4
Total Harmonic Distortion: 0.025%
S/N below rated output: 100dB
Dynamic Headroom: 8 Ohms: 2.5dB / 4 Ohms: 3.5dB
Damping Factor: 8 Ohms: >85 / 4 Ohms: >45
Rated Power Band: 20Hz to 20kHz
Frequency Response: +0, -0.9dB from 20Hz to 20,000Hz
Remote Power Control: Yes
Multi-Channel DB25 Cable: N/A
Speaker Binding Post Type: Standard
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: 4
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)
Weight: 23.5 lbs (10.7 kg) / Shipping Weight: 40 lbs (18.1 kg)
Availability: This product is available for purchase in-store only. Contact us for more information.
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