Its sound is built for speed and for the critical analysis of a recording—not a rough translation. The result is a drier tonality that’s not exactly sweet but rather sweetly exacting. If your biases tend toward the lush, florid, romantic, or, goodness knows, euphonic, the S-300i may not entirely win your heart. However, if it’s precision-cut images and transient acceleration you’re seeking, you’ve found your ride.
This is the kind of review I appreciate and find useful. The reviewer acknowledges the fact that the amp would be great for a group of people, but not for all. I am solidly in the "lush, florid, romantic" camp, and all the Krell gear I've heard in the past sounds exactly like the reviewer described it: very fast, analytical, dry. I believe that Krell is well aware of its reputation for such a "house sound" - that's what their founders/engineers must like. Not my cup o' tea, but good for them. Even though I often joke about the Krell sound - because it's the antithesis of how I define "The Delicious Sound", I respect a company that stands by what they like and gives their customers a consistent experience regardless of fashion trends. Hmmm, sounds like another audio company many of us here like

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The description of how good this type of amp can sound on acoustic guitar was also dead on. I happen to play guitar and I learned that you need a fast, detailed, dry amp to really capture and reproduce what a live guitar sounds like (and speakers with metal tweeters also help.) If all I listened to was top notch acoustic recordings, I could tolerate, and even enjoy, such an amp/speaker combo but, alas, my ears don't like the results when I play other types of music and poorly recorded music in general.
At $2500, however, it sounds like a great amp for Krell lovers. I wish that McIntosh would produce something in that price range

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Alberto