I recently purchased the Ultrasone Pro 900s, and needless to say, they're amazing. 
Paired with my macbook they sound real nice, but with my samsung galaxy s2, they obviously need more power.
I've been reading through some threads, and am thinking about purchasing the C&C BH portable amp. I'm sure it'll make the headphones sound way better with both my laptop and my phone.
I know the C&C BH amp comes a 3.5-3.5mm interconnect cable, so do I need anything else to use it with my galaxy s2 and laptop?
If not, is there a cable that will make the sound quality even better that isn't super expensive?
Any other suggestions for portable amps (~$100) paired with these would also be much appreciated.
Thanks 












