Wow, such variability in impressions of these IEMs! My PP8s are for travel with a DAP (QP1R first, now QP2R), 1 flange Spinfits (I think, I'm traveling so I don't have the whole kit with me). My travel music collection is mainly modern orchestral, chamber, pano, jazz. Nothing too edgy or fast. No pop or rock, few vocals. Currently on a train from Paris to Amsterdam listening to Anouar Brahem's "Blue Maqams," one of my favorite travel albums. Dave Holland's bass and Jack DeJohnette's kick drum are anything but muddy, and they blend very well with the lower notes from Brahem's oud and Django Bates's piano. Highs from DeJohnette's cymbals and Bates's piano are clean, fast, not shrill. Oud notes have detailed texture, good decay. Compared with the same album on my speaker system or with their live performance I heard in Zurich, not the same (of course), but in no way jarring.