Fiio X5 All New 2nd Gen (X5ii) High Resolution Lossless Digital Audio Player. The 2nd generation model in the X5 range has improved on an already impressive base model. One small step for your eyes, one giant leap for your ears is the slogan for this 2nd generation model which packs native DSD decoding, a 40% increase in power output perfect for driving power hungry headphones and flagship components that are generally best in class. And buy this Fiio X5 All New 2nd Gen (X5ii) High Resolution Lossless Digital Audio Player Now £289.00.