What amp? Is this cable legit? Please comment and help me out.

Hi, I'm new to Head-Fi.org. I stumbled upon it about a month ago when looking for audio cards on google images, and one of the images came back to this site, I opened it up and was amazed at rigs you guys have. I also recently discovered Hi - Fi audio by messing around with the audio settings on my computer (I put the setting to "powerful" and there is a HUGE difference) when switching the settings, I experienced the music, not listened. Anyway, I don't have any amps but do have KOSS DJ100 headphones, which in my opinion very good. 

HERE WE GO

After some thinking I am deciding I am going to get a portable amp (something like and around the price range as a HeadRoom TAH). The reason being, I am going to South Dakota with my dad soon, and decided I want a portable amp so I can power my KOSS' and listen to some DUBSTEP on my Iphone, also when I'm just at home. 

ONE MORE THING

Is this a legit LOD cable? http://cgi.ebay.com/Apple-Line-Out-Dock-LOD-Cable-iPhone-iPod-iTouch-Nano-/280663507865?pt=Other_MP3_Player_Accessories&hash=item4158d94399#ht_3303wt_902

It is in Hong Kong and it looks decent, I don't want a Fiio cable and I am wondering if ordering from Hong Kong is worth it for this cable.

THANK YOU, I thank you in advance, and best of luck with your filthy Hi Fi audio needs

Thank you for responding so quickly. Also, what do you mean by "exposed cables in your bag or pocket"? and is the HeadRoom Total AirHead an Ok amp? One last thing, is it worth buying from UK?:http://cgi.ebay.com/Fiio-L9-Connect-Adaptor-iphone-ipod-/360371066653?pt=UK_CE_MP3Access_RL&hash=item53e7ca171d#ht_1958wt_694

Exactly my point (the shipping part). And yes I understand the exposed cable idea, I can probably mod it, so then it sticks straight down (the iphone being rubberbanded to the top of the amp of course). Also, my dad is kinda Iffy about getting stuff off websites (besides ebay and amazon etc.) so I'll see, I mean he is the one with the paypal account haha. Also I listen to Dubstep or Drum and Bass. If that can help decision on an amp.