I’ve recently bought a new CD player and some new speakers. They are working really nicely and I’m delighted with them. The guy from the shop was very helpful when it came to choosing them. He also recommended I try some fancy isolation feet for the speakers and, despite my initial scepticism, I found they really improved the sound. After he’d installed what I bought, he suggested that when I was happy with it all I should go back to the shop for some upgrades to the mains cables for my components. I have looked around the internet for guidance and found plenty of people arguing that these things are a complete waste of money and others arguing that they can make a massive difference to audio quality. Having been sceptical about the speaker feet but found they made a huge difference, I’m wondering whether I should take the salesman seriously but before I go back to the shop I thought I’d see whether anyone here (I’m especially looking at you, @fentonsteve) can give me an idea whether it’s likely to be worth it.

All advice gratefully received…