Originally Posted by HDPERSON
No, I purchased 8K cables from audiano, zeskit and cable matters, all are great and I did see and hear improvements. Cable Matters 8k from Amazon comes in a three pack and is not expensive.
If any of those cables work for you then they're good cables, for you. That being said:
The Audiano 8k cables from Amazon are 6' passive cables, so they should work. No mention of CTS testing and they are advertised as "HDMI 2.1" cables which is something that HDMI.org asked cable mfrs years ago not to do. If they truly were 48Gbps certified, they should mention CTS testing and be advertised as Ultra High Speed HDMI cables.
The Zeskit 8k cables from Amazon are also 6' passive cables. They do mention that the connectors are CTS tested so they can use the Ultra High Speed name. However, without having any devices that have been certified to transmit at 48Gbps along with source material that requires the additional bandwidth performance can't be independently validated (in-home use).
Cable Matters 8k cables from Amazon are 6' passive cables as well. They do not mention CTS testing and carefully label their cables as "Ultra 8k HDMI Cables", not Ultra High Speed HDMI cables. That's done to confuse the consumer. Again, no way to validate their 48Gbps bandwidth claim which again, is meaningless at this point it time.
Whether the cable can actually transmit data at 48Gbps with future consumer devices has yet to be proven. HDMI 2.0 is standardized around 18Gbps, which means, among other things, that the data from the source to the sink is sent at that bandwidth. There is no "overhead" to help it along.
The cable is just a data pipe. You either get the signal/data as it was originally transmitted without errors or not. The cable itself cannot improve pq other than an error-free connection. It cannot make reds any redder or greens any greener.