Originally Posted by
lespaulibanez
Exactly there is no need. The X3 gives out 270mw @ 32ohms while the E07K is 220mw ohms.
I'm interested in listening how the computer USB audio sounds thru a DAC/AMP. Got no time yet to compare sound coming from line out. Maybe next week if i got time.
Meantime has someone noticed the published Freq Response of the E07K or E17?
10Hz to 220 khz / 10Hz to 500 khz.
What are these high figures if say someone uses the X3 that has a freq Resp of 10hz to 20Khz only?
Our dogs are complaining that they can only hear upto abt 50 khz. and us humans only abt upto 20 khz.
I also doubt that the low 10hz cannot be felt on the headphone and its just on paper.
A 10 hz signal can be felt easily although not heard. I have a sub at home that can do that and i can safely say that the published 10hz bottom freq is not attainable on headphones.
thats for the amp. but the DAC is only 10-20. actually we can hear below up to 8khz and depending on age, 15khz up may not be audible anymore. honestly, i dont know. if you really wanna know, ask Fiio themselves or you can check head-fi, there are guys from Fiio in there esp the CEO himself. but for me, i dont really bother much into the very very specific details, just enough for me to enjoy the music.
check this video:
How Old Are Your Ears? (Hearing Test) - YouTube