On the Hope 6- the denon earpads brought out a little more stage and bass. The comfort increase is fantastic as the stock pads are horrible. On the Hope 4- the stock earpads are comfortable BUT perform like open air foam pads, all the bass is gone. Putting on the shure earpads greatly increased the bass and tamed some the shrillness on the highs. Sounds like a great, nicely detailed headphone now. Not up to what the Hope 6 is, but much closer.