Please can any body help me with a problem i have? I have a "Colorfly c3" with "fiio E7" amp running "sennheiser HD202" wav loossless  setup! but being an old fart and partialy deaf  i find the volume just about audible on full tilt, can i "piggyback" another E7 or E07K to boost sound levels, the sound out of this little player is superb but if you cant hear it it means nothing