sentences:  Both Class XD and ATF remain proprietary technologies only found on Cambridge Audio high-end products.2006 also saw Cambridge Audio launch the first truly affordable music server, the Azur 640H, a networked CD player that also featured a 160 GB hard disc.2010 saw another product with the arrival of the first Minx loudspeakers, designed as a sub/sat system, but with the emphasis on sound quality.