McIntosh Labs MI254 4-Channel Digital Amplifier
McIntosh’s MI254 brings smooth, rich voicing and unexpectedly muscular bass control to a compact four-channel design. Adrian found its delivery forceful, full-bodied and impressively capable with the right speakers, while balanced inputs, illuminated meters and rack-ready practicality make it a compelling powerhouse for refined multi-room or home-cinema systems.
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Nicely Roasted
Sound Quality
89/100
Build Quality
88/100
Value for Money
91/100
Pros
Smooth, rich, full-bodied sound with bass performance that exceeds expectations for its price class.
Forceful, dynamic delivery and strong speaker control; the reviewer found it drove compatible speakers extremely well.
Strong value proposition, combining recognisable McIntosh voicing with a compact, practical four-channel format.
Cons
Soundstage is somewhat narrower and more laid-back, with less depth than traditional McIntosh amplifiers.
Results depend heavily on speaker matching; its abundant bass energy can overwhelm less capable loudspeakers.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 89/100
The available review finds the MI254 notably smooth, rich and full-bodied, with unexpectedly strong bass performance and confident drive. Imaging is described as sharp, though the presentation is somewhat laid-back and less expansive in width and depth than some traditional McIntosh amplifiers.
Transparency Resolution
88/100
The reviewer describes a sharp image and says the amplifier is voiced in the familiar smooth McIntosh manner. There is little direct commentary on fine-detail retrieval, air, or low-level resolution, so its clarity is more clearly established than its ultimate resolving ability.
Tonal Balance Musicality
91/100
The MI254 is repeatedly characterized as smooth, rich and full, with a voicing the reviewer considers true to the McIntosh sound. Its bass is singled out as particularly impressive for the price, contributing to an easy, substantial and musically engaging presentation.
Dynamics
92/100
The reviewer calls the amplifier dynamic, forceful and capable of driving the auditioned speakers extremely well. With 250W per channel into 8 ohms and 300W into 4 ohms, it is positioned to bring authoritative power and control to demanding multichannel installations.
Soundstage Imaging
84/100
Image focus is described as very sharp, and the stage has pleasing layering. The reviewer also found it narrower, more laid-back and not as deep as traditional McIntosh amplifiers, which limits its spatial performance relative to its strongest traits.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
88/100
The MI254 is a purpose-built four-channel digital amplifier with four balanced inputs, direct-coupled outputs, remote power control, illuminated meters and removable rack-mount ears. Its specified output into both 8- and 4-ohm loads, low distortion figures and steel chassis indicate carefully considered installation-focused engineering, though the review offers little direct comment on long-term durability or internal construction.
Value for Money
91/100
At roughly $6,000 to $8,380, the MI254 occupies a premium custom-install and multichannel market. The reviewer explicitly calls it a really good value and was surprised by how much better it performed than expected, particularly praising its bass, smoothness and forceful delivery for the asking price.
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Specifications
- FTC Power Output Rating
- 250 W
- Power Output per Channel
- 250 W into 8 ohms300 W into 4 ohms
- Number of Channels
- 4
- Total Harmonic Distortion
- 0.025%
- S/N below rated output
- 100dB
- Dynamic Headroom
- 8 ohms: 2.5dB4 ohms: 3.5dB
- Damping Factor
- 8 ohms: >854 ohms: >45
- Rated Power Band
- 20Hz to 20kHz
- Frequency Response
- +0, -0.9dB from 20Hz to 20kHz
- 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
- 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
- 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)
Manufacturer's Description — McIntosh Labs
- Type: Digital
- 250 Watts x 4-Channels into 8 Ohms
- 300 Watts x 4-Channels into 4 Ohms
- Power Guard®, Sentry Monitor™, On/Off signal sensing, Bussable inputs
- 2U rack mountable
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.
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 our standard 5-way speaker binding posts.
Other features that come with the MI254 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; and 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 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 your local dealer to learn more about integrating the MI254 into your custom audio installation.
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Authorized dealers for McIntosh Labs MI254 4-Channel Digital Amplifier
- Absoulute Audio plus Video — in-store — Aiken, South Carolina, United States (website)
- Holt Hill — online and in-store — Andover, Massachusetts, United States (website)
- Resolution A/V — in-store — New York City, New York, United States (website)
- A Tube High Fidelity — online and in-store — Almere, Flevoland, Netherlands (website)
- Abt Electronics — online and in-store — Glenview, Illinois, United States (website)
- Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
- Advance Audio — in-store — Wichita, Kansas, United States (website)
- Ahead Stereo — in-store — Los Angeles, California, United States (website)
- Ajasom — online and in-store — Amadora, Lisboa, Portugal (website)
- Alen Audio — in-store — Extramurs, Comunidad Valenciana, Spain (website)
and 225 more verified dealers