The 2.2.0 firmware PWD MK2 has less bass than the 2.0.2. The M7 has around the same bass quantity as the PWD 2.2.0. The M7 has less bass than the Ref7.1. The Ref7.1 has more bass than both the M7 and PWD 2.2.0. I like the Ref7.1 more than the PWD MK2 2.2.0, though the latter does some things better like rendering microdetail and imaging. The Ref7.1 has a larger soundstage/larger sound, more bass, more neutral tone and more instrument separation.
4/7/13 at 4:21am