Very disappointed with bass. I'm no "basshead". I love all kinds of music from popular to acoustic to classical.  The bass in the AKG K240 drops off severely below 50 Hz and is nearly inaudible at 30 Hz even though the product description claims 15 Hz.  Any attempt to boost the bass will result in fluttering sounds of driver excursion. I personally prefer to leave my music source flat and I don't like using bass boost, but I want to hear natural sounding clear and sufficiently loud bass.