Recommend a Mini Hi-Fi System?

[Niall]

You won't like it Tom but you just need to argue with Currys. We had the same with a TV. Just stopped working. They told us we would have to send it off. Asked to speak to the manager and mentioned sale of goods act and they replaced it there and then.
They do not like replacing things because it means they have to mess about with the return which I may add is substantially easier for them than it is for you!