McIntosh MI502 2 Channel Digital Power Amplifier




2-Channel Digital Amplifier

  • Versatile audio amplifier for custom install applications
  • 500 Watts into 8 Ohms
  • 800 Watts into 4 Ohms
  • 2U rack mountable
  • Signal sensing
  • Power Guard® and Sentry Monitor

The MI502 2-Channel Digital Amplifier is a flexible component and welcome addition to a custom installed home audio or home theater system. It delivers world renowned McIntosh sound quality at a rate of 500 Watts into 8 Ohm speakers or 800 Watts into 4 Ohm speakers. It uses highly high-tech closed loop digital switching amplifiers and resilient power supplies that produce performance levels seldom heard in custom install audio.

The applications are nearly limitless for how to use the versatile MI502 in your home entertainment system. It can be used to power the front left and right speakers in a home theater; to drive two in-wall subwoofers; a pair of MI502s could drive the three front channels of your in-home cinema plus one subwoofer; or to power a pair of outdoor speakers for when the party makes it way outside. Additionally, a stack of multiple MI502s could be used to power the distributed audio speakers installed throughout your home.

The MI502 is rack mountable and has a mounting height of 2U making it easy to install in an equipment rack via the included mounting brackets (the mounting brackets 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 so the only thing you'll hear coming from it is amazing sounding audio that will impress yourself and your guests.

On the front panel are two blue McIntosh Watt Meters that display the power output of each channel, while multi-color LED indicators display the status of each channel. The back panel includes a pair of balanced and unbalanced inputs to connect the MI502 to your preamplifier. A pair of our standard 5-way speaker binding posts are included to connect your speakers.

Other features that come with the MI502 are: 

  • Power 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
  • Power Control 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

The MI502 includes many McIntosh design cues including a black glass front panel, our coveted blue Watt meters, an illuminated McIntosh logo, and a familiar form factor highlighted by silver trim. Contact your local dealer or integrator to learn more about adding the MI502 to your custom audio installation.


Power Output per Channel
500 Watts into 8 Ohms
800 Watts into 4 Ohms
Number of Channels
Total Harmonic Distortion
S/N below rated output
Dynamic Headroom
8 Ohms: 2.7dB
4 Ohms: 3.7dB
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
Multi-Channel DB25 Cable
Speaker Binding Post Type
Circuit Configuration
Closed loop digital switching
Circuit Design
Mono Bridge
Mono Parallel
Output Type
Direct Coupled
Meter Light Switch
Balanced Input
Front Panel
Glass with removable rack mounting ears
Direct LED
Chassis Style
Black painted steel
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
21.5 lbs (9.8 kg)
Shipping Weight
37.9 lbs (17.2 kg)