If you're not rooted yet, you will probably see at least a mild increase in SQ if you do. What player do you use?
My daily rig is Nexus 5 (Franco Kernel) -> JH Mic cable -> TF10, both of my Nexus phones (4 and 5) have better sound rooted with Franco or Faux kernel (I switch between the two; options are pretty similar).
Just got my first pair of TF10s, and I actually have a second pair of them on the way. I found the second for an amazing deal so I snagged them as a backup.
I'm liking the sound so far. The bass is awesome, I couldn't believe how nice the sub bass is on these things. I am satisfied with the sound so far, but I do wish the mids were a little more present.
Here are some pics :D
HTC One M7 LE Blue > PlusSound DIY interconnect > Fiio E12 Mont Blanc (bass boost OFF) > ChrisHimself Carbide Hybrid Cable > TF10