Is this capable of downscaling 4K to 1440p with a 4K 60hz dummy plug in the first output and 1440p monitor in the second out?

1080p is what's supported haven't tested at 1440p but it's got pretty good smarts inside.

Does this support rgb 4:4:4 at 4k 60hz?

Hello, No, this unit supports 4:2:0 at 4K 60Hz.

Do both tv's (outputs) have to be "on" simultaneously for this to work? Looking to split my xbox signal between rooms (short hdmi cable run to both)

Both TV’s do not have to be on at the same time.

If i want to send a 4k hdr/dolbyvision signal into the splitter, can i have one output be unaltered (4k+hdr) and the other be 1080p with no hdr?

Yes, I just tested this with a 2080 ti to the device, and then out to my 4k hdr monitor on output 1 and to my 1080p projector on output 2. It works fine in RGB limited and full. Keep in mind the signal to the non-hdr display will be a "flat" / "raw" color profile. So it won't look very good without serious tweaking on the secondary device, but it does work.

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J-Tech Digital HDMI Splitter 4K 60Hz 1X2 Multi-Resolution Output (MRO) by HDMI 2.0 Splitter Supports Downscale HDR HDR10 / Dolby Vision 4K@60Hz 4:4:4 HDCP2.3 2.2 (JTECH-4KSP2)

J-Tech Digital HDMI Splitter 4K 60Hz 1X2 Multi-Resolution Output (MRO) by HDMI 2.0 Splitter Supports Downscale HDR HDR10 / Dolby Vision 4K@60Hz 4:4:4 HDCP2.3 2.2 (JTECH-4KSP2)

Product ID: 510966930

Details

Brand
J-Tech Digital
Cable type
HDMI
Colour
Black
Compatible devices
Television
Connector type
HDMI

🎵Supports all HD audio formats

📺1 input to 2 output HDMI ports

🔄Multi-Resolution Output auto downscaling

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461 kr

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Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎬 Elevate your entertainment setup—split, scale, and stream like a pro!

SMART RESOLUTION SYNC - Automatically adjusts output resolution for mixed 4K and 1080p screens—no manual hassle.
DUAL HDMI OUTPUT POWER - Simultaneously stream one source to two displays without lag or loss.
FUTURE PROOF 4 K HDR READY - Supports 4K@60Hz 4:4:4, HDR10, Dolby Vision, and HDCP 2.3 for crystal-clear visuals.
CINEMA GRADE AUDIO SUPPORT - Experience immersive sound with Dolby Atmos, DTS:X, and all major HD audio formats.
LIFETIME HOUSTON BASED SUPPORT - Enjoy peace of mind with free lifetime tech support and a 1-year warranty.

The J-Tech Digital HDMI Splitter 4K 60Hz (JTECH-4KSP2) is a versatile 1x2 HDMI splitter featuring Multi-Resolution Output technology that auto-adjusts signals for mixed-resolution displays. It supports ultra-high-definition 4K@60Hz 4:4:4 video with HDR10 and Dolby Vision, plus all major HD audio formats including Dolby Atmos and DTS:X. With HDCP 2.3 compliance, built-in signal equalizer for longer cable runs, and lifetime technical support from Houston, this splitter is designed for seamless integration into modern and legacy home entertainment systems.

Specifications

ASIN	B0839PRQ2V
Brand	J-Tech Digital
Cable Type	HDMI
Color	Black
Compatible Devices	Television
Connector Type Used on Cable	HDMI
Customer Reviews	4.2 4.2 out of 5 stars (418)
Manufacturer	J-Tech Digital INC
Mfr Part Number	62
Model Number	JTECH-4KSP2
Number of Ports	2
UPC	850001567473

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