@amirm
Hi! First time poster, I am very excited to find this website. You are doing a thing that I was literally talking to somebody about wanting to do on Friday!
I wound up in an internet argument (not on an audio site for a change) in which somebody insisted that you were biased against this card. Among other things, he claimed that you didn't test the card properly because it is advertised heavily for use with headphones and you didn't test the headphone output. I explained that a 10 ohm output impedance is unacceptable and that a vast majority of headphones are not the 80 ohm cans that the rule of thumb recommends, but he was having none of it.
I was wondering if you could go into a little bit of detail about why you chose not to test the headphone output at all. Was it merely that the 10 ohm impedance makes it not fit for purpose and therefore not worth investigating, or does that make it significantly more difficult to test?
Thanks!