Blue Circle Audio NSLPrice: $19,500

Website: www.bluecircle.com

Michael said: I can say with confidence that if you have speakers that it can drive, the NSL will be a revelation of just how wonderful music can sound, rewarding you with making your music sound special in ways you probably haven’t heard from your system. The NSL was one of the best-sounding power amplifiers I have ever heard. I give it my highest recommendation.

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Read the Ultra Audio review.

The gist: One look and you know this thing is different.

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