Quote:

Originally Posted by

**lin0003**
Quote:

Originally Posted by

**ben_r_**

Yea at best you get from ASUS the following: LINK

Headphone : 7 Vrms ( Vp-p)

Which if my math is correct: P = V^2 / R the following is true:

@ 35 ohm - 1400mW

@ 50 ohm - 950mW

@ 100 ohm - 490mW

@ 250 ohm - 196mW

@ 300 ohm - 163mW

@ 600 ohm - 82mW

Which is a lot for the lower impedance headphones, but Im telling you I was never impressed by that output and really just used my E1 as a DAC.

So why doesn't it drive the He-500s? They are 32(?) ohms right? I'm using an M-stage right now and it does pretty well.

Not to sound like a killjoy, but you can't calculate it that way... 12 watts into 4 ohm, right? Can assure you it will never be able to deliver that, the sound will likely distort at a watt or so..

The output at 32 ohms without significant distortion could be anywhere from 300 mW to a watt I'd guess, but we can't possibly know without measuring.