Before the LS50 KEFs reboot of the LS3 5a was actually the XQ10. The story of why the LS50 became the reboot of the LS3 5a was more for marketing reasons and
KEF XQ-10 Gloss White Pair | Monitors | Audiogon
KEF Audio XQ 10 Bookshelf Speakers user reviews : 4.5 out of 5 - 0 reviews - audioreview.com