Any Suggestions?

Great! I've already ordered one. Apparently there's a 3 week wait though. :(

Thanks! Don't know how I couldn't find this.

These amps are hard to find in the UK, it says it comes with a 12 month warranty though so I'm not sure. What do you guys think?  ...

Any other amp suggestions? My budget is around £80, and in the UK, obviously.

Thanks for the reply! Do you have any recommendation for a amp? Apparently you need one with a low output impedance due to the k550's low impedance(32 Ohms). Maybe an Objective2 amp? 

Hey guys, I've had the K550's for around 4 months now, and I've just started to notice how weak they sound when connected to my desktop. Compared to when they are connected to my Iphone, they are much quieter and just weaker in all respects. What could be the issue with my desktop? Do I need...