How do they sound? Magnificent! These have fantastic dynamic range. The bass enclosre design provides tight, powerful bass, and the separate mid and tweeters are clean, crisp, non-fatigueing. These are wonderful speakers. You don't need a sub with these at all. The KEF 105.2 sound wonderful at low volume as well. That's how I usually play these as they are part of a "loft" system that I turn on during early weekend mornings. I have these paired with my McIntosh MC 2100 and an Adcom Pre-amp.
Update: HiFiCollector.com community member, Tony sent in this link to a KEF user forum - great info there - thanks Tony!
If you have any stories or photos of your KEF 105.2 speakers, please leave a comment or email me.
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KEF Audio's 105.2 official page.