I'm about to buy a new TV a Panasonic TX-55CX700 which is UHD 4K tv

I will use my AV Amp to put the sound through

I have HDMI 2 cables going from my Sky HD box, APPLE tV and from the amp to the tv, my amp can cope with 4K signals

The chap in Currys told me I need HDMI 2a to be used due to the 4K signal needing a higher Rating

I'm not sure as the only 4K input is Netflix, or You Tube etc as I don't have Sky4K yet

So if the TV itself is showing the 4K content, it's sound that's passing through the HDMI cables Former Mod/Member, with the most post & Chicken George Arch nemesis

Not sure if this helps, but I purchased a 4k telebox recently. Having never owned a telebox that took hdmi leads (we were still on scart) I purchased a couple of leads from John Lewis.

They work, picture looks great. I don't think anyone broadcasts in 4k yet so don't worry about it.

It's all to do with data speeds but will have to see what my leads are like

I won't be paying £90 for the monster lead currys wanted to sell me, even if it was a BOGOF offer Former Mod/Member, with the most post & Chicken George Arch nemesis

All this 4K is a bit pointless as no transmissions are in 4K yet, more than likely will be 8K by the time the software etc is rolled out so I was told anyway. (Past) Freelander 2 HSE 2010 MY In Rimini Red.
(Past) RR Evoque Dynamic Lux Si4 In Firenze Red.
(Past) RR Evouque Pure Tech in Barollo Black with bespoke Firenze Red colour coding.
(Present) Freelander Metropolis 2015 MY In Santorini Black with Ivory Premium Leather.

I have a Panasonic 4k 58ax802, and use Sony HDMI cables (around £10 each) with no issue
If you buy wisely, there is not often a need to spend loads of money on cables. 

Been playing with 4K a bit recently on some high end home cinemas installs. As far as I am aware HDMI 2.x is a change in standard that kit conforms to not so much the cable. That said, some early HDMI cables may not support bandwidth transmissions but HDMI 1.4 complaint leads (about 2010 onwards) should (fingers crossed) be OK.

Looking at the place were I bought them, they all are 3D compliant so will see when the deals done

Need to sort a new stand out now, mines 100mm and will need a 120mm as the feet are 100mm apart, or look for a nice cantaleaver style one Former Mod/Member, with the most post & Chicken George Arch nemesis

Go for a ordost Valhalla 2 4K UHD HDMI Cable, a snip at £6750.

alternatively any £10 quid HDMI 2.0 cable should suffice

Crickey my tv is only one step up from black and white, 2K, 3K mines a nothing K, but it'll do, the programs are still the same rubbish whatever youve got.
Mind you the adverts arent bad.

A/V and HiFi in general has always been my passion. I've just resurrected my 30 year old record deck (and spent £150 in the process) so I can play the vinyl again.

I'm working on the wife to let me spend £1500 on some new 5.1 speakers for as well.Not egtting too far - 'the ones you have got sound ok to me'. What does she know.

Just got a new 55" LED dispaly after my plasma screen died under warranty and I got a free 'replacement'. Spent days tweaking it so that the colours are just as I like it.

Ok, yes I am sad.

Expensive digital cables = snake oil.

Just found out I can save an extra 5% on it by a NHS discount scheme too, Former Mod/Member, with the most post & Chicken George Arch nemesis

The 4K signal is picture only so any HDMI can be used for the amp, The TV upscales, and as said apart from Netflix, no 4k transmissions. If and when Sky transmits 4K I suspect you will need a new Sky box or card, Sky is not exactly known for supplying any upgrades for free. The knowledge in Currys is somewhat lacking, they tried to sell me a gold optic lead as the connection was better and there were less losses with gold contacts, he seemed confused when I said light doesn't travel through gold
Why don't you go to Richer Sounds where the advice is given on a technical basis and not commercial, or John Lewis where the sales staff are manufacturer trained, their sales staff are brand specific. Both give free 6and 5 year warranties respectively my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.

as above, ive always used Richer Sounds as I find them to be helpful and knowledgeable. when they sold me my LG TV 5 years ago there was an almost identical one next to it that was also LG but for £200 more. He advised me to get the cheaper one as it had the same specs but the previous years frame. 5 yrs on and I still have it. Yes there are better out there now, but it still shows 1080p HD with no issues.

Its a bit like 4G mobile services, nobody yet offers full 4G (which is just a marketing name anyway) as none of the providers have the equipment for 4G voice, only Data, and then the cells are limited to a small number of 4G users at any one time.
THe only provider who will be full 4G will be BT/EE when they merge as BT were the only ones who bought the hardware even though they didn't have a network to put it on at the time

4G/4K etc etc....... all marketing names to bring in the ''must have latest tech'' public

new TV arrived and all setup on its temporary stand, picture is fantastic and well happy with it

though for some reason my sky box has started to cause some feedback and making the subwoofer hum  Former Mod/Member, with the most post & Chicken George Arch nemesis