Few hobbies exemplify the law of diminishing returns like audiophilia. Buying $500 speakers may be a clear upgrade from a pair that cost you a benjamin, but the more money you spend, the less obvious those improvements become. As you venture into the world of hi-fi, the requirement of a decent amplifier and other components only add to the sticker shock. That’s why the KEF LS50W are so refreshing. If you’ve never invested big money in audio, it might seem absurd to call pair of $2,200 speakers a great value. But truth is, you’d likely have to either spend hundreds,…

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