I've been using PJB's like yours, Silvia, and really like them for my bass. However they sound a bit crap on my digital piano so I've recently bought a pair of Beyer Dynamics DT770. Well better than the PJB's for music in general, they appear a lot more robust than the rather flimsey-feeling PJB's, and lastly they are just as good with the bass as the PJB's. Allround a much superior headphone in every respect - and only slightly dearer. I got the 80ohm version.