I'll just quote google translate word salad...it's a head melt translation I know, which is why I tried to extract the main gist of the mod at first....it is $150 for the modded E12. Warranty invalidated obviously.
""Details behind Modify Ver. (By xxxxxxxxxxxx).
When captured, Mamoru FiiO E12 ...
It is enough feedback, we have to solve it for you. A mellow blend E12 is not good. Technique called tonal languages balance (balanced audio) without measuring it. Ears, we judge this song. People will listen to everyone Senses. If you then it is against the natural sounds we've heard it will be felt immediately. Yes, this is it contrary E12. Lack of continuity in some frequency to (probably dropped to the noise filter).
Input starts at the WIMA capacitor proud of the distortion. But at least some noise Adds high value, it can not because they do not produce. Be noted that other models were put out E12 4.7 to 2.2 because of the pressure.
So we put a electrolite non-polar capacitor. Hey ... Electrolite sucks! Technically yes But it's a different story. Even in headphone amp. From experience, I think it sounds better than the Broad Stage in harmony soft timing detail in tranches not compete with the speed of the device is the deity specification excellence.
The second issue capacitor power supply. I dismantled the smd is smooth, then took the plain to reduce centreline.
The third module adjusts the Buffer from 110Mhz to 18Mhz.
This makes it sound .... it changed to another one amp (really).
Voice behind Mo ...
What is missing, or have any comments to improve it. Particularly harmonious flow Listen Audiophile more Gently pitched a no-hitter as promiscuous and also go a long way up (a little) deeper bass than the bass heavy music not callousness stage surrounded thicker than the original singer's voice sound sweet and smooth."""
Edited by Lohb - 6/18/14 at 8:16pm