Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio

Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio

Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio

Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio

Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio

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Atlona AT-JUNO-451 overview

  • 1Description

The 4K/UHD HDR 4x1 Input HDMI Switcher from Atlona is HDCP 2.2 compliant and supports 4K/UHD video @ 60 Hz with 4:4:4 chroma sampling, as well as HDMI data rates up to 18 Gb/s. The JunoX 451 is ideal for residential applications with emerging 4K/UHD and HDR sources and displays. It is compatible with all video resolutions, audio formats, and color space formats supported in the HDMI 2.0a specification, plus the ability to pass metadata for HDR content. The JunoX 451 includes EDID management features and automatic input switching.

The JunoX 451 also supports the HDMI ARC (Audio Return Channel) for receiving digital audio from a television, and includes a TOSLINK digital audio output for sending this audio to an AV receiver or soundbar. This JunoX Series HDMI switcher can be controlled via Ethernet, RS-232, and IR. A handheld IR remote control is included. It is designed to deliver dependable, pristine-quality image presentations in residential as well as commercial applications.

The JunoX 451 automatically selects an input source based on detection of the 5V hot plug detect (HPD) signal, as well as active video. This ensures reliable auto-switching operation for all video sources, including DVRs, DisplayPort / Mini DisplayPort adapters, and other devices that always maintain the HPD line at the 5V high state but may not be delivering active video. It is configured, controlled, and managed using the AMS (Atlona Management System), a powerful network software platform that integrates product configuration, status monitoring, and firmware updates. Specially designed for IP-controllable Atlona products, AMS reduces installation time and enables remote monitoring and support of multiple Atlona devices over a network.


Reliable HDMI signal switching
Easy to install and deploy in residential and commercial applications
Compatible with 4K/UHD and HDR-capable sources and displays
Supports video resolutions, audio formats, and color space formats in the HDMI 2.0a specification
HDCP 2.2 compliant adheres to latest specification for high-bandwidth digital content protection and allows protected content stream to pass between devices
Selects active input when sources are connected or if there is a change in source power status
Enables simplified, automatic system operation with no user intervention necessary
Manages EDID communications with the source through a display's EDID or internally stored EDID
Ensures desired audio formats and video resolutions are provided to the AV system
Supports the HDMI Audio Return Channel
Provides a return audio pathway from a television to an AV receiver or soundbar over the TOSLINK digital audio output
Easy and convenient integration of television audio for over-the-air broadcasts, smart TV apps, and more
Flexible control options for compatibility with third-party control systems
Remotely managed by the Atlona Management System software
Integrates product configuration, management, and updates to reduce installation time and enable remote support
Supports PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Digital Surround, and DTS-HD Master Audio
Front panel USB port provides an easy means for device updates
Ensures long-term system return on investment
LED indicators provide HDMI input selection status information
Provides easy setup and troubleshooting
Easy installation into racks and confined spaces
Keeps devices out-of-sight when placed in public spaces


  • Installations utilizing the latest UHD and HDR sources such as Ultra HD Blu-ray players, plus compatible televisions and projectors
  • TV showrooms requiring reliable content distribution to televisions, to properly demonstrate the quality and appeal of 4K and HDR programming
  • Professional AV applications with full-motion, highly detailed 4K graphics presentations for visualization, 3D renderings, simulations, and more
UPC: 846352004934
In the Box
Atlona 4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio
  • Handheld IR Remote Control
  • Limited 10-Year Warranty
  • Table of Contents
    • 1Description

    Atlona AT-JUNO-451 specs

    Video 4096 x 2160 @ 24/25/30/50/60 Hz, 3840 x 2160 @ 24/25/30/50/60 Hz, 2048 x 1080p, 1080p @ 23.98/24/25/29.97/30/50/59.94/60 Hz, 1080i @ 50/59.94/60 Hz, 720p @ 50/59.94/60 Hz, 576p, 576i, 480p, 480i
    VESA 2560 x 2048, 2560 x 1600, 2048 x 1536, 1920 x 1200, 1680 x 1050, 1600 x 1200, 1600 x 900, 1440 x 900, 1400 x 1050, 1366 x 768, 1360 x 768, 1280 x 1024, 1280 x 800 1280 x 768, 1152 x 768, 1024 x 768, 800 x 600, 640 x 480
    Color Space YUV, RGB
    Chroma Subsampling 4:4:4, 4:2:2, 4:2:0
    Color Depth 8-bit, 10-bit, 12-bit
    HDMI PCM 2Ch, LPCM 5.1, LPCM 7.1, Dolby Digital, DTS 5.1, Dolby Digital+, Dolby TrueHD, DTS-HD Master Audio, Dolby Atmos, DTS:X
    Sample Rate 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
    Bit Rate Up to 24-bit
    Distance HDMI IN/OUT @ 4K: Up to 15' (5 m)
    HDMI IN/OUT @ 1080p: Up to 30' (10 m)
    Bandwidth 18 Gb/s
    CEC Yes
    HDCP 2.2 Compliant
    Operating Temperature 32 to 122°F (0 to 50°C)
    Storage Temperature -4 to 140°F (-20 to 60°C)
    Humidity 20 to 90% non-condensing
    Consumption 6.6 W
    Idle Consumption 5.9 W
    Power Supply Input: 100 to 240 VAC, 50/60 Hz
    Output: 5 VDC
    Certification Unit: CE, FCC
    Power Supply: CE, FCC, Level VI, RoHS, cULus, RCM, CCC
    Dimensions 1 x 8.6 x 5.9" (2.5 x 22 x 15 cm)
    Weight 1.82 lb (0.82 kg)
    Packaging Info
    Package Weight 3.4 lb
    Box Dimensions (LxWxH) 13.8 x 8.2 x 2.8"

    Atlona AT-JUNO-451 reviews

    4K/UHD HDR 4x1 Input HDMI Switcher with Auto-Switching and Return Optical Audio is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from works perfectly I have a Pioneer krp-500m monitor, which has limited HDMI inputs and no optical output. I'm using this switch to connect a chromecast, ps4, and nintendo switch, while outputting the audio via optical to a sound bar. It works perfectly and the auto-switching is great. Even though I'm not using the HDR and 4K capabilities right now, it'll be nice to have for a future monitor and TV.
    Date published: 2017-10-03
    • y_2018, m_10, d_18, h_14
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