[WalkGood]

Quote:

Originally Posted by Antony6555 /img/forum/go_quote.gif Where are you getting your information? The VAST majority of iems are designed to be used directly from portable sources and will only improve very slightly if at all. Iems are designed to be much, much more efficient than headphones.

I agree with your statement as well ...

 

[SoupRKnowva]

while iems might generally have low impedance and high sensitivity, the impedance isnt always constant. Specially not on the higher driver count customs like the jh13's. This present a more difficult impedance vs. frequency load which could be difficult for a portable player to handle resulting in poor FR. Though with a single dynamic driver or single BA this would most likely not be an issue.

Soup