Well, I read all the mixed reviews and really wanted these phones to work. You'll notice many of the good reviews are by self proclaimed audiophiles or other "experts". Many of them presume if you don't hear enough bass, you either don't know how to insert the product in your ear or don't know good sound. Let me tell you, if I had inserted these things any further in my ear canal, it would have taken a surgeon to remove them. I've been using headphones of all types for twenty years and while I'm no audiophile, I know good sounding from bad. In my experience these things lack any kind of bass output.I tried all the different shaped tips that came with the product and different positions in the ear canal. Nothing mattered. I suspect these phones rely on specifically shaped ear canals. Yes, their clarity was amazing but the complete lack of low end was appauling. They're going back.