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Atlona AT-JUNO-451

4:1 4K HDR HDMI switcher
4 x HDMI inputs; 1 x HDMI output; TCP/IP, RS-232, and IR control

£281 (£337.20 inc. VAT)
Availability: In stock

Atlona AT-JUNO-451 Description

The Atlona JunoX™ 451 (AT-JUNO-451) is a 4×1 HDMI switcher for high dynamic range (HDR) formats. Part of the comprehensive family of Atlona 4K HDR integration products, it 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 Gbps. The JunoX 451 is ideal for residential applications with the latest as well as 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 2.0b specification, plus the ability to pass metadata for HDR content. The JunoX 451 includes EDID management features and automatic input switching. It also supports the HDMI Audio Return Channel (ARC) for receiving digital audio from a television. A TOSLINK digital audio output is provided for sending ARC or de-embedded HDMI 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.

The JunoX 451 is designed to deliver dependable, pristine-quality image presentations in residential as well as commercial applications. It includes Atlona’s award-winning 10 year limited product warranty and customer support services, so that integrators can specify, purchase, and install with confidence.

Reliable Auto-Switching

The JunoX 451 automatically selects an input source based on detection of the 5 volt 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 5 volt “high” state but may not be delivering active video.

Atlona AT-JUNO-451 Key Features

  • 4×1 HDMI switcher — Delivers high performance, reliable HDMI signal switching
  • 4K/UHD capability @ 60 Hz — with 4:4:4 chroma sampling, plus support for HDR formats
  • Ideal for new and emerging 4K/UHD and HDR-capable sources and displays
  • Compatible with 4K HDR10 and Dolby® Vision™ @ 60 Hz
  • Fully supports video resolutions, audio formats, and Colour space formats in the HDMI 2.0b specification
  • HDCP 2.2 compliant — Adheres to latest specification for High-bandwidth Digital Content Protection
  • Automatic input selection using hot plug detect and video detection technology — Selects active input when sources are connected or if there is a change in source power status
  • EDID management — Manages EDID communications with the source through a display’s EDID or internally stored EDID
  • Delivers return audio from a TV via ARC to an optical digital audio output — Supports the HDMI Audio Return Channel
  • Easy and convenient integration of television audio for over-the-air broadcasts, OTT (over-the-top) media services, and more
  • HDMI audio de-embedding — Extracts HDMI two-channel PCM or multi-channel bitstream audio to the TOSLINK digital audio output
  • Intuitive GUI-based configuration using integrated web server — Offers menu-based configuration of network settings, RS-232 settings, input switching, EDID and HDCP management, and audio
  • TCP/IP, RS-232, and IR control — Flexible control options for compatibility with third-party control systems
  • Includes a convenient handheld IR remote control — Easy to configure and manage with AMS (Atlona Management System)
  • Centralized, network-based configuration and management of Atlona IP-controllable products and systems — Manage configuration and firmware updates for AV devices spanning a facility, building, enterprise, or residence
  • Multi-channel audio compliant — Passes through multi-channel audio formats from the HDMI inputs or return audio
  • Supports PCM, Dolby Digital, Dolby Digital Plus™, Dolby TrueHD, Dolby Atmos®, DTS® Digital Surround™, DTS-HD Master Audio™, and DTS:X®
  • Field-updatable firmware — Device can be updated in the field via AMS or the web GUI, USB port also available for firmware updates
  • Front panel input selection status LEDs — LED indicators provide HDMI input selection status information
  • Low-profile, 1 inch (25 mm) high enclosure — Easy installation into racks and confined spaces, Keeps devices out-of-sight when placed in public spaces
  • Award-winning 10 year limited product warranty — Ensures long-term product reliability and performance in residential and commercial systems
 AT-JUNO-451 Product Video

Atlona AT-JUNO-451 Specifications


Video 4096×2160@24/25/30/50/60Hz, 3840×2160@24/25/30/50/60Hz, 2048x1080p, 1080p@23.98/24/25/29.97/30/50/59.94/60Hz, 1080i@50/59.94/60Hz, 720p@50/59.94/60Hz, 576p, 576i, 480p, 480i
Vesa 2560×2048, 2560×1600, 2048×1536, 1920×1200, 1680×1050, 1600×1200, 1600×900, 1440×900, 1400×1050, 1366×768, 1360×768, 1280×1024, 1280×800 1280×768, 1152×768, 1024×768, 800×600, 640×480
Colour Space YUV, RGB
Chroma Subsampling 4:4:4, 4:2:2, 4:2:0*
Colour Depth 8-bit, 10-bit, 12-bit
Hdr HDR10 and Dolby® Vision™ @ 60Hz


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 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Bit Rate up to 24-bit


HDMI In/out @ 4k up to 5 meters
HDMI In/out @ 1080p up to 10 meters


Bandwidth 18 Gbps
Cec Yes
HDCP 2.2 Compliant


Operating 0°C to 50°C
Storage -20°C to 60°C
Humidity 20 to 90% non-condensing


Consumption 6.6W
Idle Consumption 5.9W
Supply Input: AC100-240V ~ 50/60Hz
Output: DC 5V


Dimensions H X W X D 26 x 219 x 152
Weight 0.82 kg
In The Box User guide, IR remote control, surface mounting brackets, and external universal power supplyCertification
Unit CE, FCC
Power Supply CE, FCC, Level VI, RoHS, cULus, RCM, CCC

Atlona AT-JUNO-451 Usage Diagram

Atlona AT-JUNO-451 Usage Diagram

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