Atlona 4K HDR Multi-Channel Digital to Two Channel Audio Decoder - AT-HDR-M2C

Product Overview

The Atlona AT-HDR-M2C is a 4K HDR multi-channel digital to two-channel audio decoder designed for commercial AV installations requiring HDMI audio de-embedding with stereo downmix. It extracts and downmixes PCM, Dolby, and DTS surround formats from HDMI sources, delivering two-channel output to analog, TOSLINK, and HDMI outputs — making it an ideal HDMI audio extractor for conference rooms and multi-purpose AV systems. The AT-HDR-M2C supports 4K/UHD video at 60 Hz with 4:4:4 chroma sampling and is HDCP 2.2 compliant, fitting naturally into any 4K HDR distribution infrastructure. Available at Creation Networks, it is purpose-built for integrators who need flexible audio routing from 4K sources.

Product Description

The Atlona AT-HDR-M2C is part of the Atlona 4K HDR product family and delivers HDMI audio de-embedding alongside full 4K/UHD pass-through. The unit accepts a single HDMI input and provides three audio output paths: a stereo downmixed HDMI output, an unbalanced analog stereo output, and a TOSLINK optical digital output — all carrying the downmixed two-channel signal. The HDMI input pass-through simultaneously routes the unmodified signal to a display or downstream AV device. The AT-HDR-M2C decodes multi-channel PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS Digital Surround, and DTS-HD Master Audio bitstreams, converting them to stereo PCM for compatibility with two-channel amplifiers and whole-building audio systems. EDID management ensures proper format negotiation between sources and displays, while built-in volume, bass, and treble controls eliminate the need for a separate DSP in many applications. The device supports 4K HDR10, Dolby Vision at 60 Hz, and HLG (Hybrid Log-Gamma) for broadcast-grade HDR content. IP control integration with Atlona Velocity Device Manager and third-party control systems provides remote configuration and monitoring. The low-profile 1-inch enclosure fits in rack shelves, under tables, and in furniture installations. Field-updatable firmware is accessible via the integrated web GUI, Velocity Device Manager, or a front-panel USB port.

Key Features

• HDMI Audio De-Embedding — Extracts audio from an HDMI source with or without a connected display, enabling integration into any audio distribution system.
• Multi-Channel to Stereo Downmix — Decodes and downmixes PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS Digital Surround, and DTS-HD Master Audio to two-channel PCM.
• Triple Audio Output — Provides simultaneous stereo output on HDMI, unbalanced analog RCA, and TOSLINK optical, maximizing integration flexibility.
• 4K/UHD 60 Hz with 4:4:4 Chroma — Passes 4K/UHD video at up to 60 Hz with full 4:4:4 chroma subsampling and 18 Gbps HDMI bandwidth.
• HDR Format Support — Compatible with HDR10, Dolby Vision at 60 Hz, and Hybrid Log-Gamma (HLG) for current and emerging display technologies.
• HDCP 2.2 Compliant — Passes protected content between HDCP 2.2-compliant sources and displays without interruption.
• Volume and Tone Control — On-board bass (+12 dB to -15 dB) and treble (+15 dB to -15 dB) controls adjustable via web GUI or Velocity Device Manager, eliminating the need for an external DSP.
• EDID Management — Internally stored and display-derived EDID options ensure correct audio format and video resolution negotiation with the source.
• IP Control via Velocity Device Manager — Integrates with Atlona Velocity and third-party control systems for centralized management of audio settings and EDID configuration.
• Low-Profile Enclosure — 1.02-inch (26 mm) high chassis installs discreetly in racks, furniture, and confined equipment spaces.
• Field-Updatable Firmware — Firmware updates delivered via web GUI, Velocity Device Manager, or front-panel USB port without returning the unit to service.

Typical Applications

• Conference room audio routing from 4K source devices to two-channel amplifiers
• Boardroom AV systems integrating multi-channel sources with ceiling speaker distributions
• Commercial meeting space installations requiring audio de-embedding alongside 4K display pass-through
• Multi-purpose room AV where surround content must feed a stereo zone amplifier
• Training room setups distributing audio from HDMI sources to a separate PA or DSP system
• Government space AV installations with HDCP 2.2 compliance requirements
• House of worship audio systems routing program content from HDMI sources to the mix console

Technical Specifications

Frequently Asked Questions

Q: What audio formats does the AT-HDR-M2C decode and downmix?

The AT-HDR-M2C decodes and downmixes PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS Digital Surround, and DTS-HD Master Audio to two-channel stereo PCM. The original multi-channel bitstream can still be passed through the HDMI output to a receiver or display.

Q: Can the AT-HDR-M2C pass 4K HDR video while also extracting audio?

Yes. The HDMI input pass-through carries the full 4K HDR signal — including HDR10, Dolby Vision at 60 Hz, and HLG — unmodified to a display, while the audio outputs simultaneously deliver the downmixed stereo signal.

Q: Does the unit require a display to be connected to extract audio?

No. The AT-HDR-M2C can de-embed and output audio from an HDMI source even without a display connected to the HDMI output, which is useful in audio-only distribution scenarios.

Q: How is the AT-HDR-M2C controlled in a commercial AV installation?

The unit supports IP control via its integrated web server, Atlona Velocity Device Manager, and third-party control systems using Telnet or the published API. Volume, bass, treble, and EDID settings are all configurable remotely.

Q: What is the maximum HDMI cable length supported at 4K?

At 4K/UHD 60 Hz, the AT-HDR-M2C supports HDMI cable runs up to 6 feet (2 meters). At 4K/UHD 24 Hz, the supported length increases to 16 feet (5 meters). At 1080p 60 Hz, runs up to 30 feet (10 meters) are supported.

Q: Is the AT-HDR-M2C compatible with HDCP 2.2 protected content such as Ultra HD Blu-ray?

Yes. The AT-HDR-M2C is fully HDCP 2.2 compliant and will pass protected 4K content between compliant sources and displays without signal interruption.

Q: Can volume and tone be adjusted without a separate DSP?

Yes. The AT-HDR-M2C includes built-in volume control along with bass and treble tone adjustment, configurable through the web GUI or Velocity Device Manager, removing the need for an external DSP in many two-channel applications.

Q: Where can I purchase the Atlona AT-HDR-M2C?

The AT-HDR-M2C is available at Creation Networks, an authorized Atlona reseller specializing in commercial AV solutions.