Please take note as far as I know HDMI 2.1 are not widely adopted yet.
At the moment HDMI 2.0 is used in TV, soundbar and AVR.
HDMI 2.0 cable is needed in order for 4K HDR playback as well as
Dolby TrueHD/Atmos and DTS-Master Audio/DTS-X.
When buying HDMI cable please do not look at pricing.
Quote example this Elecom cable which cost less than it's premium
counterpart.
Elecom DH-HD14ER30BK 3M
Challenger/Hachi Tech - $26.91(Member)
https://www.hachi.tech/accessories-...om-hdmi-cable-3m-dh-hd14er30bk--4953103258716
https://www.elecom.co.jp.e.gj.hp.transer.com/products/DH-HD14ER30BK.html
Take note of the cable standards as that is HDMI with Ethernet meaning HDMI 1.4.
It does support 4K but the standards and bandwidth are not HDMI 2.0.
Elecom DH-HDP14E10BK 3M
Challenger/Hachi Tech - $36.81 (Member)
https://www.hachi.tech/accessories-...for-ethernet-30m-dh-hdp14e30bk--4953103495098
https://www.elecom.co.jp.e.gj.hp.transer.com/products/DH-HDP14E10BK.html
This cable is HDMI Premium certified so compatible with 4K HDR.
I know some don't feel the need to spend extra on cable if it can work than it should be OK. However there are different HDMI cable with different standards so have to take note.
So far I have not seen any HDMI 2.1 cable in market I do not want to talk about it.
Rule of thumb, more expensive HDMI doesn't mean it is better.
There are other more premium brands HDMI like Audioquest, Monster and etc. but don't waste money on such cable.
Like LiLAsN mentioned, beside Elecom, there is Monoprice, Amazon basic are good alternate brands. My AVR is using Monoprice subwoofer cable, very study and well build cable.
Best place to get cables like HDMI, speaker cables and etc.
Amazon would be better than Taobao and etc.
Since Challenger now have E-store, you can purchase through it.
Take note using less reputable brands HDMI or OEM ones, you may face several issue:
- Flickering
- Occasion Green screen/No image
- Occasion Picture/audio drop in/out
Which means the cable is not of good quality and you have to change it.