I'll throw my 2 cents in on this bass discussion. I happen to agree with the above. The 3001 has very good sub-bass extension and an excellent sense of physical weight behind the bass. Because of this, bass feels very full and powerful, even though it does not sound very loud in the mix. In that sense, and the fact that it has great control, it reminds me a lot of planar bass. Present and authoritative in a way that I think many headphones try to recreate with excess bass quantity. In a similar way, the treble sounds brighter and is louder in the mix, but because it lacks any significant peaks or resonances it doesn't feel as bright as it measures. That is the explanation that makes sense to me anyway.