I have a -moda Lp2 headset that i use at work with my Lenevo T530. I basically listed to music on youtube and mp3 on system. I am not satisfied with the bass and the volume levels. I am thinking to get an Amp. I have several in mind Fiio E6, E7, E11 and even Soundblaster 1240. Can you please help me with what should i buy. I want value for money!