Since summer of last year I have not been able to wear any sort of headphones. Whenever I wear them, whether they're on or off, loose, tight, loud, quiet, in ear, over ear, whatever,  First I feel a lot of pressure, within a few minutes I am having trouble breathing, then I start coughing, and I...

I have a 160gig iPod Classic with a fiio line out cable and a PA2V2. If I were to buy a fancy ALO Audio line out cable would I notice any difference in sound quality? 

Are there any fans of industrial music here? I'm a big fan of every form of it. From SPK to Skinny Puppy to Nine Inch Nails to modern EBM style.  Here's a few of my favorite songs in the genre.    

  Hello, I've been browsing for two weeks and found this site extremely helpful. You guys have a very good community here and I'm happy it exists. So I'm hoping to get some help on portable headphone amps.    My current setup is a 160 gig ipod classic with sennheiser 380 pro headphones,  a...