McIntosh MX124 A/V Processor Announced: 13.4 Channels, 8K, and Four Subwoofer Outputs

Written By Indiana Lang

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McIntosh has announced the new MX124 A/V Processor, a premium 13.4-channel processor built for high-end home theater installations. Designed as the centerpiece of a reference-grade system, the MX124 supports today's latest immersive audio formats, advanced room correction, and full 8K video compatibility. Best AV Receiver Deals on Amazon!

The biggest upgrade over its predecessor? Four independent subwoofer outputs, doubling the previous model's bass management capabilities and allowing for more advanced theater layouts.

The MX124 supports speaker configurations up to 7.4.6 or 9.4.4, along with Dolby Atmos, DTS:X Pro, Sony 360 Reality Audio, and MPEG-H Audio. It also includes licenses for Dirac Live Room Correction, Dirac Live Bass Control, and Audyssey MultEQ XT32, giving installers multiple options for optimizing room acoustics.

Video support is equally impressive, with seven HDMI inputs, three HDMI outputs, 8K/60Hz, 4K/120Hz, Dolby Vision, HDR10+, VRR, ALLM, and IMAX Enhanced compatibility.

Beyond movies, the MX124 also serves as a high-end music streamer, supporting AirPlay, Spotify Connect, TIDAL Connect, Qobuz Connect, Bluetooth, and Roon Ready playback.

Why It Matters

McIntosh isn't chasing the mainstream AV receiver market. The MX124 is aimed squarely at luxury home theaters where flexibility, long-term support, and premium performance matter more than price.

Our Take: The MX124 checks nearly every box you'd expect from a flagship processor in 2026. Four independent subwoofer outputs, Dirac Live, Audyssey, immersive audio support, and full 8K video make it a serious option for anyone building a no-compromise home theater. If your budget allows, this looks like one of the most complete A/V processors McIntosh has released to date.Best AV Receiver Deals on Amazon!

Indiana Lang

Indiana Lang is the Founder of Ultimate Tool Reviews and Founder and Editor-in-Chief of Ultimate Technology Reviews. A product reviewer and technology journalist since 2016, he has tested and reviewed hundreds of products across power tools, trucks and automotive gear, outdoor power equipment, home theater, audio, networking, smart home technology, portable gaming, and consumer electronics.

With more than 15 years of hands-on experience in low-voltage, AV, networking, and related technology, Lang brings a practical, real-world approach to product testing. His reviews focus on long-term ownership, direct comparisons, real-world performance, and helping readers decide whether a product is actually worth buying.

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