Thanks esanthosh for digging those up.
Also those tests don't mention the output voltage, so take them for what you will...
At least the FR is right, the rest such as dynamic range and noise level may not be.
I strive for accuracy in my source, so that near flat FR of the clip on low load is very important to me. I'm curious to know what the exact output impedance is on all those players such as J3 and A845. The HM801 is around 18 ohm iirc so that is why that FR looks so wild on low loads such as IEMs; for high impedance cans over 300 ohm though I'm sure it looks a lot flatter. A845 is probably close to the HM801 in output impedance since the FR shares some similarities. The J3 may be close to the clip in output impedance but the bass roll off has something to do with some capacitor chosen for the J3's output stage from what I've read, similar to the D2 I've owned.
Edited by kite7 - 9/21/11 at 8:17pm