To satisfy the video needs of your home cinema, the MX123 has 7 HDMI inputs and 3 HDMI outputs. All HDMI inputs and outputs support HDCP 2.3; Rec. 2020; 4:4:4 color spacing; Dynamic Lip-sync; and 3D Video pass-through. To create the most life-like and realistic picture possible, all MX123 HDMI ports support a myriad of high dynamic range formats: HDR (static HDR); Dynamic HDR; HDR10+; HLG; and Dolby Vision (including low latency). These technologies will ensure every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast, and color – on a scene-by-scene or even a frame-by-frame basis.

The 3 HDMI ports that are 8K/60Hz and 4K/120Hz compatible offer many other advanced features:

• Quick Media Switching (QMS) that eliminates the delay that can result in blank screens before content is displayed.
• Enhanced HDMI video features to improve gameplay performance by bringing an added level of smooth and seamless motion and transitions, including:
• Auto Low Latency Mode (ALLM) that allows the ideal latency setting to automatically be set allowing for smooth, lag free and uninterrupted viewing and interactivity.
• Quick Frame Transport (QFT) that reduces latency for smoother no lag gaming, and real time interactive virtual reality.
• Variable Refresh Rate (VRR) that reduces or eliminates lag, stutter and frame tearing for more fluid and better detailed gameplay.

The MX123 is also fully compatible with all the leading home theater surround sound and object-based 3D audio formats such as Dolby^® Atmos (including Dolby Atmos Height Virtualizer); DTS:X^® Pro; Auro-3D^®; Sony's 360 Reality Audio, an immersive audio experience utilizing Sony’s spatial sound technology; and MPEG-H Audio. MPEG-H Audio, primarily developed by Fraunhofer IIS, is an open ISO standard and the industry’s most advanced audio system for UHD-TV and streaming. It supports both immersive sound and the ability for users to adjust elements in the audio to their preferences. MPEG-H has been on the air since 2017 on all TV networks in South Korea under the ATSC 3.0 standard. It was also selected for new broadcast standards to be launched in Europe, China and Brazil. 

Audio Return Channel (ARC) and Enhanced Audio Return Channel (eARC) functionality is included on 1 of the HDMI outputs. ARC allows a compatible TV to send audio data to the audio video processor over the HDMI cable, eliminating the need for separate audio cables. The more advanced eARC offers greater bandwidth so higher resolution audio formats such as DTS-HD Master Audio^™, DTS:X^®, Dolby TrueHD, and Dolby Atmos can be sent through the HDMI cable.² 

Additional connections include: 4 digital audio inputs; 1 balanced and 8 unbalanced analog stereo audio inputs (including 1 dedicated as a Moving Magnet phono input to connect a turntable); an unbalanced 7.1 multi-channel audio input; 3 component and 4 composite video inputs; 1 USB Type A input; 2 unbalanced analog stereo outputs; 2 composite video outputs; and 1 component video output.

The MX123 is IMAX^® Enhanced compatible. IMAX Enhanced is a set of stringent performance standards established by IMAX and DTS^® to create a consistent and higher bar for image and sound performance on premium devices. It utilizes a sophisticated, advanced algorithm designed to produce the highest-quality, sharpest 4K HDR images. IMAX and DTS will also partner with award-winning Hollywood sound mixers to use a special variant of the DTS:X codec technology included in the MX123 to deliver an IMAX signature sound experience in your home theater.

The MX123 has received Connects with Control4 Certification from Control4^®, a leading global provider of smart home automation solutions, with the implementation of their Simple Device Discovery Protocol (SDDP), allowing it to be effortlessly integrated into Control4 automation systems to further enhance the user experience. It has also received Works with Crestron Home certification from Crestron, a global leader in advanced smart home technology. Crestron Home unlocks the full potential of a smart home. It’s the complete package for any size project, delivering a simpler, smarter user experience for homeowners, remarkably fast configuration and deployment for integrators, and the confidence that comes with renowned, best-in-class Crestron control hardware.

1) The use of Ultra High Speed HDMI cables is required to take full advantage of the MX123's HDMI capabilities.
2) TV must be compatible with ARC/eARC.
3) All services may not be available in all regions; certain services may not yet be enabled for all apps; subscriptions may be required.

The MX123 is compatible with AirPlay 2. iOS 11.4 or later is required. To wirelessly stream music to the MX123 via Apple AirPlay 2 a wireless router is required. Router not included.
Apple, AirPlay, Apple TV, Apple Watch, iPad, iPad Air, iPad Pro, iPhone, and Lightning are trademarks of Apple Inc., registered in the U.S. and other countries. The trademark “iPhone” is used in Japan with a license from Aiphone K.K.
Non-McIntosh-Provided Services: Embedded and/or non-embedded services, e.g. those listed above, are necessary for full functionality, are provided by companies unrelated to McIntosh, and are beyond McIntosh’s control. McIntosh cannot and does not warrant against interruption, discontinuance, unsatisfactory performance, reduced Product functionality, or damages of any kind attributable to such services or their providers.
Manufactured under license from Dolby Laboratories. Dolby, Dolby Atmos, Dolby Audio, Dolby Surround, Dolby Vision and the double-D symbol are trademarks of Dolby Laboratories.
Manufactured under license from IMAX Corporation. IMAX^® is a registered trademark of IMAX Corporation in the United States and/or other countries. All Rights Reserved.
For DTS patents, see http://patents.dts.com. Manufactured under license from DTS, Inc. DTS, the Symbol, DTS and the Symbol together, DTS:X, and the DTS:X logo are registered trademarks or trademarks of DTS, Inc. in the United States and/or other countries. © DTS, Inc. All Rights Reserved.
Manufactured under license from Auro Technologies. Auro-3D^® and the related symbols are registered trademarks of Auro Technologies. All materials contained in this work are protected by copyright law and may not be reproduced, distributed, transmitted, displayed, published or broadcast without the prior written permission of Auro Technologies NV or in case of third party materials, the owner of that content.
The MPEG-H Audio System logo is a trademark of Fraunhofer IIS and is registered in Germany and other countries.
Manufactured under license from Audyssey Laboratories™. U.S. and foreign patents pending. Audyssey MultEQ^® XT32, Audyssey Dynamic EQ^®, Audyssey Dynamic Volume^® and Audyssey LFC^™ are registered trademarks of Audyssey Laboratories.
The Bluetooth^® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by McIntosh Laboratory, Inc. is under license. Other trademarks and trade names are those of their respective owners.
HDMI, the HDMI Logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.