Running any modern Stereo or Home Cinema system on thin speaker cable or the interconnects you get free in the boxes, would be like buying a Ferrari and then running it on cross-ply tyres. A typical 'give-away' interconnect costs about 10p to manufacture in China - cheap speaker cable can cost as little as 5p a metre. So if you're not careful, you could end up running £1000 of Audio System through cable worth only a few pence. Guess how that's going to sound?! There simply is no point in cutting corners with cabling - if you want good performance, you've got to use good cables.