Milestone ML-401HD-ARC-4K 4K HDMI Audio Video Switcher with ARC Support

Description

Milestone ML-401HD-ARC-4K 4K HDMI Audio Video Switcher with ARC Support – Full Product Details

The Milestone ML-401HD-ARC-4K 4K HDMI Audio Video Switcher is a professional AV connectivity solution designed to switch between multiple HDMI sources while providing flexible audio extraction options. With four HDMI inputs and one HDMI output, it allows users to connect multiple source devices and select the desired video signal for a compatible display or projector.

Designed for conference rooms, meeting spaces, home entertainment systems, commercial displays, and professional AV installations, the Milestone ML-401HD-ARC-4K supports video resolutions up to 4K × 2K at 30Hz with 4:2:0 chroma sampling, along with 3D video formats. Its HDMI Audio Return Channel (ARC) and Consumer Electronics Control (CEC) support help integrate compatible displays and audio equipment into a convenient AV setup.

The switcher also features three audio de-embedding outputs: one analogue stereo output and two digital audio outputs, supporting SPDIF and coaxial connections. This makes it useful for installations where HDMI audio needs to be routed to compatible external audio equipment.

Product Specifications

About the Milestone ML-401HD-ARC-4K HDMI Switcher

• Four HDMI input sources: Connect up to four compatible HDMI devices to one switching unit.
• Single HDMI display output: Route the selected source to a compatible TV, monitor, projector or display.
• Audio Return Channel: ARC support enables compatible display audio to be returned through the HDMI connection.
• Audio de-embedding: Extract audio through analogue stereo, optical SPDIF and coaxial digital outputs.
• Multiple switching modes: Choose manual, automatic or scan switching according to installation requirements.
• Remote and system control: Use the built-in IR remote or RS-232 interface for compatible control setups.

Key Features of Milestone ML-401HD-ARC-4K

1. Four-Input HDMI Switching

The ML-401HD-ARC-4K allows four compatible HDMI source devices to be connected at the same time. Users can select the required source for display without repeatedly unplugging and reconnecting HDMI cables. Typical source devices include computers, media players, set-top boxes and other HDMI-enabled equipment.

2. 4K Video and 3D Format Support

The switcher supports video resolutions up to 4K × 2K at 30Hz with 4:2:0 chroma sampling, as well as supported 3D formats. This makes it suitable for compatible presentation and entertainment installations. Check the source and display specifications to ensure that the intended resolution and refresh rate are supported end to end.

3. HDMI ARC and CEC Compatibility

Audio Return Channel (ARC) allows compatible display audio to travel back through the HDMI connection to supported audio equipment. Consumer Electronics Control (CEC) supports compatible device-control functions. The ARC feature can be enabled or disabled according to the system requirements, and all connected devices must support the required functions.

4. Three Audio De-Embedding Outputs

The ML-401HD-ARC-4K includes audio de-embedding options for installations that use separate audio equipment. Its outputs comprise one analogue stereo connection and two digital audio connections, including optical SPDIF and coaxial audio. These outputs help connect compatible amplifiers, receivers and audio systems without relying solely on audio carried through the display.

5. Selectable Audio Modes

The unit provides selectable 2.1 or 5.1 audio settings. Choose the mode that matches the capabilities of the connected audio equipment and the requirements of the installation. Actual audio playback depends on the source format, switcher settings and downstream equipment compatibility.

6. Manual, Auto and Scan Switching

Multiple switching modes help adapt the device to different operating environments. Manual mode lets the user select a source, automatic switching can respond to source availability, and scan mode cycles through inputs using a configurable interval. The built-in IR remote supports convenient operation, while RS-232 provides an interface for compatible AV control systems.

Audio Performance and Connectivity

Audio de-embedding makes it possible to route audio from an HDMI source to compatible external sound equipment. The analogue stereo output can support suitable stereo systems, while optical SPDIF and coaxial digital outputs provide additional connection choices for compatible receivers and amplifiers.

For ARC operation, connect the switcher to a display and audio system that support ARC, and enable the relevant settings on compatible equipment. Verify the intended audio format and channel configuration before installation, particularly when using a 5.1-channel setup.

Applications of the Milestone ML-401HD-ARC-4K

• Conference rooms: Switch between multiple HDMI-connected presentation devices.
• Corporate meeting spaces: Share content from different sources through one display connection.
• Home entertainment: Connect multiple HDMI devices to a compatible television and audio system.
• Projector installations: Select between presentation sources connected to an HDMI projector.
• Commercial AV systems: Integrate video switching and external audio routing in compatible installations.
• Training and education: Manage multiple HDMI sources for lessons, demonstrations and presentations.

Installation and Compatibility

• Connect up to four compatible HDMI source devices to the HDMI inputs.
• Connect the HDMI output to a compatible display or projector.
• Connect the analogue or digital audio output to compatible audio equipment as required.
• Enable ARC on the switcher and connected equipment when ARC audio return is needed.
• Select the appropriate audio mode and switching method for the installation.
• Use suitable HDMI cables and confirm support for the required video resolution, 3D format and audio configuration.
• For centralised control, confirm compatibility with the intended RS-232 controller and follow the manufacturer’s instructions.

Why Choose the Milestone ML-401HD-ARC-4K?

The Milestone ML-401HD-ARC-4K combines multi-source HDMI switching with ARC support, CEC compatibility and dedicated audio de-embedding outputs. Its manual, automatic and scan modes provide flexibility for different installation types, while IR remote and RS-232 control support convenient operation in compatible AV environments.

For conference rooms, presentation systems and home entertainment setups, it offers a practical way to manage multiple HDMI sources and route audio to compatible external equipment from a single switching unit.

Conclusion

The Milestone ML-401HD-ARC-4K 4K HDMI Audio Video Switcher with ARC Support is designed for installations that need four HDMI inputs, one HDMI output, audio de-embedding and flexible source selection. With support for 4K × 2K at 30Hz, 3D formats, ARC, CEC, analogue stereo and digital audio outputs, it is suitable for compatible conference rooms, projector installations, display systems and professional AV applications.

Note: Maximum video resolution, audio channel support and ARC functionality depend on the connected source devices, display, cables and audio equipment. Confirm the official datasheet and system compatibility before purchase.