Sorry Dave but that's just no excuse. Spend £50 on fuel, save yourself some serious dosh in the long-term and go and demo your speakers. Even if you have to drive 100-200 miles. Please! Take your amp & streamer with you.
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If you intend to keep this kit for years, surely it's better to be happy with it? The likelihood of finding what suits your taste first time is small. NEVER rely on magazine reviews or other people's opinions because our tastes are so different. My favourite speakers I have ever heard received a 4-star award in What Hifi magazine back in the day, but they suited my taste in a very 5-star way.
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If you don't demo, you'll just be constantly swapping your kit and losing money big time. Or you'll just keep it but always have that feeling that you don't like it every time you use it. You have been warned.