You two might be interested in the AP100, I have it, it is excellent and EQ works with line out, furthermore there is a dedicated EQ toggling button, I am in audio heaven

$177USD on Amazon, mine came with an extremely high quality leather case which if sold separately would easily cost $30-40USD. Some report that they got a cheap silicone case, so I dunno what that's about, but if you go do yer research you should see many Fiio X1, X3 and X5 owners feel the AP100 significantly trumps it. Bargain.
I also own a second edition Alien Shozy, an Xduoo X3 owner says the Alien Shozy trumps it (sound wise), and I feel the AP100 beats the Shozy... so yeh take that under consideration. One of the reasons I haven't bought the Xduoo X3 is that I own a AP100 and Alien Shozy and they are supposedly vastly superior to the X3, but I like to keep my eye on all kinds of DAPs
It was my understanding this pitch error is hardware based, rockboxed won't fix it. Someone else can chime in if i'm mistaken...