I have just bought a pair of B&W 607 S2 Anniversary Edition speakers and am at the moment very disappointed with the sound I get from them. I listen mostly to classical and find the sound (especially in the strings) lacks definition. I would even describe the sound as slightly fuzzy. Are the speakers likely to be faulty or is the problem possibly my amplifier? It is a Rotel RA-06 which must be 17 or 18 years old. The amp used to be partnered with Tannoy speakers that were even older but they always performed well together. I could risk upgrading the amp but don't want to spend a good bit of money only to find that I have not solved the problem. If I were to take the plunge, what amps are recommended? I have heard good things about the Rotel A11 Tribute.