Originally Posted by music_4321
You will most likely NOT need an amp with such high end custom IEM. Read more threads than this one from people who are TRULY experienced and have no other interest but share their views.
Serious, well-meaning head-fiers will tell you that either you don't need an amp, or the improvement is SO MARGINAL, you won't even notice. Beware of all the hype of extra expensive gear.
The truth is, you don't really NEED an amp with many headphones, but the question is: do you want your headphones to sound their absolute best? Then get an amp that synergizes with your headphones, whether they be custom IEMs, full-size cans, or even Koss PortaPro's.
I've had the Westone ES2's for 2 1/2 years and honestly, they sound downright boring unamped, but with the right amp they come alive. Do they need an amp? No, but they do sound like their moneys-worth with proper amplification.
And yes, I'm truly experienced and a serious Head-Fier.