Originally Posted by cabmanuk
Thanks BrownBear for your reply, I was just wondering whether those was good amps and if one was better than the other. As far as i know they are powerful enough for my earphones, being new to audio and amps its always nice to get views from those with a bit of experience.
Thanks again for your reply Cabmanuk :-)
No problem. Sorry I couldn't be more help with your specific amp choices, but I can't comment on something I haven't heard. Only thing I can recommend is maybe searching the forums to see if anybody has any impressions of those amps posted, I'd be willing to bet there is.
Power-wise, you're already sure they'd both be enough for your headphones, so that's good. So it seems like only thing left is sound.
However, a few things you can check for are the specs for the amps. I tend to pick amps that are 'good on paper', but that's just me. For example, in my opinion, it's best for an amp to have a low as possible output impedance, but again there's varying opinions on this topic. This is one reason I'd go with the Fiio, if I had to pick on of those amps. It's output impedance is 0.3 ohms where the D1 is 10 ohms, if I'm reading the website correctly.
It looks like both companies do a pretty good job with listing specs. If there's spec you don't understand, I'm sure there's a help section on here that will explain it quite well.
In all, definitely search for some reviews, they might be pretty helpful.
EDIT - The 0.3 ohm output impedance spec was for the Fiio E17. The E09K seems to be '<10 ohms'.
Edited by BrownBear - 2/25/14 at 8:56pm