My friend loaned me his unit to audition at home for a few days and I've been thoroughly impressed with it and just bought one for myself yesterday. This a very good value for money headphone amp when you look at its specs (Class A and 4 watts @ 16 ohm) versus its price. No complaints about its overall build quality except I found the headphone-out socket to be a bit loose after repeated use. I especially appreciated the 3 levels of Bass Boost and Virtual 3D features (I'm a basshead). The highest bass boost setting was very good for EDM/Pop/Rock...