Let's talk about the outlook of E11 first, Fiio E11 is consistent special and beautiful with past model E7 which is a lightweight design and give up a dac function and display from E7. The body of E11 is casted by brushed aluminum to achieve lighter weight , only 65g, and the thickness of E11 is very thin, only 13mm. The volume bottom of E11 made a turn-style system volume and system volume is enclosed by a plastic "bridge ", it is the charactistic of E11 and made it look and feel better.
In function, Fiio E11 has two stages of EQ function (i.e. off/1/2), I heard that bass will be correspondingly increased when turned on, , in addition to bass EQ function , the human voice will be also a corresponding bulge. There will be a little noise when the EQ turned on, but very mild only. In addition, E11 has the function of gain, so that further increase the power for use of high impedance headphones. The battery used on the F11 is nokia BL-5B Lithium-Ion battery, which is easily replaced, and the charging time is shortly, just about 2 hours to get the full charging, but the drawback is that there cannot be used when the USB connected to E11 for charging the battery.
I am using the ipv (mod) player and UE tf 10pro in-earphone, it found that the human voice is the weakness of the my system, but I started to use with E11 together with off EQ functions, the problem become solved and the bass is quite adequate, field and analytical are also good. E11 may be trended on the bass design, the treble is not very attractive comparatively, but also have fair performance, hoping the treble will become better after burn in, because I only heard it in very short time. In addition, the power of E11 is well, because I only turn on 2 degrees volume with off gain, is still adequate volume for my mind,
Finally, the price of E11 is reasonable and attractive compared with the same grading/ list price portable Amp in the market, but also in the exterior design, both functional and quality of sound are still attractive.