I purchased my beryllium Usher CP 8571’s used back in May of 2014. I am very pleased with their performance. To complete a home theater set-up, I went in search of a local USA Usher dealer. The only one I could find was Fred at Katli Audio. From Fred I purchased a BE 616 DMD center and a pair of S 520’s as surrounds. Because the center channel had a DMD tweeter, I decided to purchase two DMD’s for the 8571’s to match. Fred had them in stock. Installation of the new tweeters was a snap. I too believe the DMD’s provide more detail than the beryllium tweets. On another note, playing a 5.1 SACD of the 1812 Overture at ludicrous volume proved too much for one of the S 520 woofers. Fred had one of those in stock too. Thank goodness for Fred. I’m genuinely surprised there aren’t numerous Usher dealers here in the US.
