I tried to use the whole I think the B & O module, the overall sound degree of detail, level of clarity has improved significantly. If you add an analog amplifier with headphones itself bit, the overall feeling although the effect has been raised, such as bass and more , and the volume will also help, but I think maybe would have less body DAC B & O modules, the overall sound relatively dim, even though the addition of analog amplifiers helpful, also feel less out of the B & O module sound good.