Yes, DX50.
It drives LCD-2 suprisingly well, volume is about 3/4 of the way, visually, most of the time. Gain set to High of course.
DX50 at max volume with LCD-2 is too loud, but there is NO distortion coming from Audezes whatsoever, sound just becomes louder and louder, and at some point too loud for comfort..
that is sharp contrast compared to Grado PS-500, the Grados don't like being overdriven at all, sound becomes very distorted and very quickly.
The PS-500 sound really nice hooked to Sony ZX1, my friend here has the Sony. But ZX1 is hopeless with LCD-2, not nearly enough gain.
I always thought it's the DAPs, that cause the distortion after certain level of amplification, amp clipping or something... But no, DX50 certainly does not start distorting when driven past comfortable listening level, neither does Fiio E18.
I prefer Fiio E18 over ibasso DX50 by far! It is just the mess of USB connection and phone connected, you can have all that fit in jeans or shorts pocket, if jeans baggy enough, but I always adjust volume, and change tracks, the phone and dac in same pocket quickly becomes tiresome. Maybe a small bag on a belt would help.
But DX50 solves all this, you give up some of the Fiio transparency and very clean overall sound, but I love ibasso industrial design, the look, and the 3 buttons, play/pause, back and forward, all thats needed.
For comparison, ipod 5 classic needs to be on max volume, then you can use it with LCD-2, and not bad at all. But some recordings are lower in level, then there's nothing you can do.