I'm thinking about getting component video/audio cables for my wii, instead of the existing composite cables (run through a composite to scart adaptor), as I understand I might be able to improve picture quality, but I was wondering if there is a difference in picture quality between different makes of cable, for example between official and third party cables.
The TV is an HD (1080p) PAL TV, if that is relevant.
Best Answer
Yes, technically.
The Wii uses an analog method of sending the image and audio to the TV, analog signals can degrade which decreases the signal quality. Better cables can reduce this.
This does not however mean you should go out and buy the most expensive cable you can find (unless you have money growing on trees, in which case, send me some?) because the difference between a good cable and the best cable is generally very hard to see.
The quality loss is also based on how long the cable is, get a cable that reaches comfortably to the TV with only a bit of slack and don't coil it and you'll get perfectly fine quality.
For example, a test between very expensive audio cables (Monster brand) and... a coat hanger: http://consumerist.com/2008/03/03/do-coat-hangers-sound-as-good-monster-cables/