Ok cheers for that Danny,
If however I am looking for a nice portable amp is the best option for both portability and battery life is the C&C BH?
Is there much else out there other than say the FiiO amps?
If it turns out that I a may be needing an amp with my WS99's I thought I might start looking now just in case. Although it may never turn out like that. But what could I look at around the $0-$100 range?
As pgnwn mentioned, the ws99's sound awesome out of the C&C BH. It's quite small/portable, and you can't beat the 80 hour battery life. I love the synergy of the clip zip + c&c bh + ws99's. Get your head bobbing ready lol!