This is my 1st post so I'm hoping for a helpful response to my somewhat "noobish" question.
First off, I am using Beyerdynamic DT 770 Pros, 80 Ohm.
I recently purchased a new phone, the Huawei Ascend P6, and was planning on using it as my primary source seeing as it can play FLAC. However it turns out that the output of the phone is awful, and the battery life isn't great either.
So in an effort to resolve the poor phones issues I purchased a FiiO E17 DAC/AMP. Unfortunatley even with the E17's gain, EQ and volume set to max I still have to have the phone set to max volume to get a decent level from the DT770s. Even with everything set to max it's still not loud enough for me, I think this explains just how bad the phones output is.
I was also planning on using the E17 with my laptop via Optical SPDIF but I read some reviews saying that asynched USB to optical is better for various reasons, reduced jittering, better clocks etc. This lead me to discover another issue with the E17, it's lack of any asynched DAC function.
So now that I have found the problems with my set up I need to find the solution, and after doing some research I have decided to go down the road of a standalone DAP, and I am swaying towards the X3. The asynched DAC functionality, SQ, battery performance and price are very enticing. Plus it will match my E17 and look good when they are strapped together.
Now where I get confused is with the digital inputs/outputs and amp functions of the X3. Here is what I am really wondering:
1. Does the X3 need an amp, will the E17 I already have help boost the X3's output or prolong it's battery life?
2. The X3 has the same DAC as the E17, so if I plug the X3 into the E17 via a FiiO L12S optical cable will the DACs conflict?
3. The X3 is asynchronus whereas the E17 is not so if I run a set up like this will it work?
Laptop into X3 via asynched USB - X3 into E17 via L12S - E17 into DT770s via 3.5 jack
Now I don't know much about this stuff, but I have really tried hard to understand what I am buying. I have researched for hours on end and read countless forums. My knowledge has increased greatly over the past few weeks but I really need some professional help.
Thanks for taking the time to read about my dilemma, I look forward to your replies.