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In Stock Same-day processing on in-stock orders Available to order; contact us to confirm lead time Contact us for availability
Same-day processing on in-stock orders. US orders arrive in 3–5 business days (AK/HI 5–7) · Expedited delivery (2–3 business days) is available for eligible items. Lead time is confirmed after you order. Contact us for availability. Tracking number emailed when your order ships. Shipping policy
Product Overview
Atlona the Juno 4K HDR four-input HDMI switcher with auto-switching and optical audio out.
Key Features
The Atlona JunoX™ 451 is a 4×1 HDMI switcher designed for high dynamic range (HDR) formats. It is HDCP 2.2 compliant and supports 4K@60 Hz 4:4:4, as well as HDMI data rates up to 18 Gbps. The JunoX 451 is ideal for residential applications the latest or 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. 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.
Get reliable, high-performing HDMI signal switching that’s easy to install and deploy. With four inputs, this switcher is perfect for commercial applications like conference rooms or even a residential install.
This switcher features 4K/UHD capability @ 60 Hz with 4:4:4 chroma sampling, plus support for HDR formats. It’s also compatible with new and emerging 4K UHD and HDR-capable sources and displays; plus, it fully supports video resolutions, audio formats, and color space formats in the HDMI 2.0a specification.
Adhering to the latest specification for High-bandwidth Digital Content Protection, this switcher allows a protected content stream to pass between devices.
Using hot-plug-detect and video detection, this switcher automatically selects the active input when sources are connected or if it senses a change in source power status. 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.
This switcher manages EDID communications with the source through a display’s EDID or internally stored EDID, and also ensures desired audio formats and video resolutions are provided to the AV system.
Using ARC, this switcher provides a return audio pathway from a television to an AV receiver or soundbar over its TOSLINK digital audio output. This allows for convenient integration of TV audio for over-the-air broadcasts, streaming services, and more.
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Same-day processing on in-stock orders; orders placed on weekends or holidays begin processing the next business day. For US orders: Standard 3–5 business days (5–7 business days to Alaska and Hawaii). Expedited delivery (2–3 business days) is available for eligible items and is quoted after you order. Backordered and special-order items ship on confirmed lead times. Estimates are not guarantees; weather, carrier delays, and remote destinations can extend delivery times.
We accept orders only with U.S. shipping and billing addresses (the 50 states and DC). We cannot accept international, APO/FPO, or U.S. territory addresses. We ship via carriers including FedEx, UPS, and USPS. Standard ground shipping is free on all U.S. orders. Expedited shipping is available for eligible items and is quoted after you order; nothing extra is charged without your approval.
Inspect your order on arrival. If an item arrives damaged, defective, or is not what you ordered, contact us within 48 hours so we can arrange a replacement or refund at no cost to you, including return shipping. If a package arrives damaged in transit, also keep all packaging so we can file a carrier claim.
Full policy: Shipping Policy Full policy: Refund & Return Policy
Most items can be returned within 30 days of the delivery date for a refund or exchange, and every return needs an RMA number. For a full refund, items may be opened but must be unused, in original condition with all accessories and packaging, and any free promotional items must be included. Except for damaged, defective, or mis-shipped items, you pay return shipping. Items returned incomplete, used, or missing original packaging may be subject to a restocking fee of up to 15% or a partial refund. Special-order, custom-configured, and clearance/final-sale items, opened software, downloadable content, gift cards, opened consumables and personal-use items, and items missing serial numbers or manufacturer packaging can’t be returned. Any exceptions are noted on the product page.
Once we receive and inspect your return, we email you to confirm approval. Approved refunds go to your original payment method, typically within 3–5 business days of inspection, and your bank or card issuer may take an additional 5–10 business days to post the credit. Original shipping charges are non-refundable unless the item arrived damaged, defective, or was shipped in error.
A manufacturer warranty may apply to an eligible product. Coverage, term, and claim process vary by product, condition, and manufacturer, so check the product listing and manufacturer documentation for the exact term. Open-box, refurbished, used, and final-sale items may have different terms. If warranty eligibility is important to your purchase, contact us before ordering so we can confirm the information available for this item. Our support team can also help locate documentation or start an eligible claim.
We accept Visa, Mastercard, American Express, and Discover cards, PayPal, and Google Pay on supported devices and browsers; checkout shows the options available for your order and device. Purchase orders, NET 30 terms, and wire transfers are offline and by arrangement only. Call us at (800) 581-6868 (Mon–Fri 9 AM – 6 PM ET), email support@audiovideonation.com, or use Live Chat when available.
30-day returns on most items (RMA required). For a full refund, items may be opened but must be unused, in original condition with all accessories and packaging
Return policyReport it within 48 hours for a replacement or refund at no cost, including return shipping
Damaged item policy