Hi, Head-Fiers. I'm currently looking to replace my FIIO E5 with something better and also more durable for use during commutes. My E5's output jack is no longer properly connected to the circuit board so I figured it's time to upgrade. I also own an RE0 and a SoundMagic PL20 as backup so most people here would correctly deduce that I prefer analytic sound signatures. I mostly use the E5 to boost bass and I'm not motivated to get a top of the line amp yet because the J3 doesn't have a line out and so far, the E5 has sufficed, but just barely. I'm currently leaning towards the FIIO E11 but am also considering the FIIO E7 and SoundMagic A10 but I am wondering about other alternatives as well. The E11 pretty much bumps off the iBasso T3D off my list due to the E11 review here at Head-Fi. The digiZoid ZO which I also read up on sounds like it colors the output, specifically, it also boosts the mids, so no go on that. [Edit: I just realized that the E11 is still on pre-order so info is very limited atm so I'll skip the questions about the E11] I'm also interested in the E7 because of the USB DAC functionality since when I'm at work, I use my laptop to save my J3's charge, but I read in an E11 review here at Head-Fi that the E7 can sound grainy at highs which I fear will happen when it is paired with the DBA-02 plus it's also bulkier and more expensive. Is the E7's grainy highs that bad on a DBA-02? How does the E7 compare to the E5 in terms of those grainy highs? Is the E7 at par or better than the E5 when it comes to boosting bass in terms of volume and quality? How does the E7 compare to the Soundmagic A10? I am open to considering other portable amps in the same price range, and perhaps some that are a bit more expensive if the SQ and bass boosting is considerably better. Is there anything else I should be considering?