i tested it briefly on my humble sansaclip+FiioE18....
wasnt enough to add bite to the overall sound, almost threw my mind back to the stockT50rp..
that sonorous slumber of sorts.. i didnt get excited over the sound..
think this can needs some power to grab it by the b@LLs ?
Put on the Fostex Th900 on the same portable setup..
and the sound was crisp, tight, clear and powerful..totally diff experience.