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Passive HDMI Cable: Most HDMI cables are passive. That means one end goes into a source and the other goes to a home theater receiver or video display, and the signal is transferred. The cable is also bi-directional, meaning you can connect either end to an HDMI input or output connection. Passive HDMI cables should be able to provide a stable signal for lengths of up 15 feet. The good thing is, if it works, it works. For example, if you're sending a 4K HDR signal from your 4K Blu-ray player to your 4K HDR TV and the TV shows a 4K HDR signal, you're set. It's not possible to get a better image using a different 4K HDMI cable. That's not how the technology works. You couldn't even argue a future-proofing standpoint for 4K resolutions; any HDMI cable with a decent amount of copper, good geometry and good shielding should be able to do 4k, though that can only be said for sure for five metres-or-under HDMI cables. Above that you really do need a very well put together cable for 4k transmission. What about new HDMI cables with Ethernet Channel? Surely the chance to use fewer cables is worth paying for? All official HDMI cables use the best insulation possible, the same quality plugs, and usually solder-free cold-welding that prevents copper strands from being joined. HDMI cables carry gigahertz of very high frequency signals that travel on the surface of conductor material – usually copper, sometimes silver. Standard Automotive HDMI Cable: This cable type has the same capabilities as a standard HDMI cable, but is used to connect portable or in-car DVD players and other devices to in-car video displays. Extra shielding is provided to suppress interference from other car electrical systems and wiring.
Premium High-Speed HDMI Cable: This cable type is designed for reliable transfer of 4K/UltraHD resolution video, including4K/60 Hz, HDR, and expanded color range. Cable bandwidth support is 18 Gbps and is optimized for HDMI versions 2.0/a/b. If people can see the difference between HDMI cables, good for them," says James Luce, Brand Manager at Acoustic Energy and responsible for calibrating screens for trade shows and demonstrations.
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The 'dark art' of HDMI cables is really just a misunderstanding – and a lot of misrepresentation – of how and when quality is important. If you want to attach a Blu-ray player, set-top box or games console to a TV from directly underneath it, a cheap, perhaps even in-the-box HDMI cable will do just fine. As long as that pipe is "big" enough, which is to say it has enough bandwidth, you should be good to go. The 18Gbps bandwidthmentioned above came about with the HDMI 2.0 spec, so if a cable claims it, it's likely built to handle the additional data that HDMI 2.0 connections can provide. The new Ultra High Speed cables are capable of 48Gbps, but that's far beyond what any current source can send. The original Standard or Category 1 cables were certified to handle 1080i or 720p video. The later High Speed or Category 2 cables took the bandwidth up from 4.95Gbit/sec to 10.2Gbit/sec, which meant they could transport 1080p video at 60 frames per second or 60Hz, or 4K video at 30fps or 30Hz. Category 3 or HDMI Premium cable reaches 18Gbits/sec and supports 4K video at 60Hz, while the highest spec Category 3 (8K) or Ultra cable can do 4K at 120Hz or 8K at 60Hz. For home cinemas this is particularly important; installations where a projector is mounted on a ceiling some way from the AV sources will have to use a fairly pricey 10-15m HDMI cable, but they're pricey because they're up to standard – there's not much choice in the market here anyway (read: buy the cheapest – don't be fooled into thinking that there's much difference between two 15m HDMI cables).
An HDMI cable will have a trapezoid-shaped connector on either end of the wire. This connector will have 16 tiny pins that will be used to transmit the digital signal to your TV or monitor. HDMI cables will have the same connector on both ends of the wire.There's a greater variation in how TVs are set-up in homes than differences in cable quality," says Tim O'Malley at Wavelength Distribution, which sells Supra HDMI cables. "You might find three people, each with different HDMI cables, but the quality of the picture will differ because one TV was simply unboxed and switched-on, another was adjusted by the user, and another was fully installed and calibrated by the person that sold the TV." What makes a good HDMI cable? Keep in mind there's no such thing as HDMI cable "versions." As in, there's no such thing as an "HDMI 2.0" cable. The version numbers refer to the physical connections in your TV, receiver or sound bar. So your TV and 4K Blu-ray player need to both have HDMI 2.0 to watch HDR content, but the cable connecting them couldn't care less. It's just a dumb pipe. On that note, steer clear of 'flat' HDMI cables; there's simply not enough room for a twisted pair of copper wires to conduct without interference.
This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items.Active: An active HDMI cable has a small chip built into the cable that takes a little power from the device's HDMI connector and uses it to boost the HDMI signal. These cables cost a little extra, but are far more likely to work. A long passive cable might work for you, but it might not. It depends on your gear. Since they're not significantly more expensive, they're worth considering for any long run. This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items. To return faulty items see our Returning Faulty Items policy. There's another problem here that actually increases with price; the heavier the cable, the better quality is probably is … and the greater likelihood that it will fall out of, say, a TV's HDMI input. It's more evidence for those that think that the HDMI standard is poorly thought-out, riddled with basic problems and just isn't up to the job. Can you measure any difference in video quality between expensive and cheap HDMI cables? They come from exactly the same no-name factories as the expensive cables, but haven't been through pricey testing procedures, so they could be duds – and they're low price suggests they've probably without decent shielding – but these logo-less HDMI cables are from the same production line as cables that have passed the test.
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