The only thing about that amp I don't like is the volume adjustment. Just the smallest touch can make the volume go really loud. I don't even bother with IEMs but I never use them much at he anyway. I used my Elear for a few hours today and they did sound wonderful. The background definitely was darker and the added depth was a real treat. Anyone that doesn't have a THX based amp needs to get one, your ears with thank you.