MI254 4-Channel Digital Amplifier
 
Perfect for home theater surround sound speakers
250 Watts into 8 Ohms
300 Watts into 4 Ohms
2U rack mountable
Can also be used in distributed audio
Bussable inputs
Signal sensing
Power Guard® and Sentry Monitor™
 
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. It 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.
 
Specifications
 
Electronic Specifications
FTC Power Output Rating
250 W
Power Output per Channel
250 W into 8 ohms
300 W 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 20kHz
 
Control
Remote Power Control
Yes
Multi-Channel DB25 Cable
N/A
 
Connectivity
Speaker Binding Post Type
Standard
 
General Specifications
Circuit Configuration
Closed loop digital switching
Circuit Design
Digital
Mono Bridge
N/A
Mono Parallel
N/A
Output Type
Direct Coupled
Meters
Yes
Meter Light Switch
No
Balanced Input
4
Front Panel
Glass with removable rack mounting ears
Illumination
Direct LED
Chassis Style
Black painted steel
BTU Rating
1000 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
23.5 lbs (10.7 kg)
Shipping Weight
40 lbs (18.1 kg)