These "canal" buds are very high quality and have excellent mid and high clarity response. The bass response is clear and punchy, but maybenot as phat as some bassheads would like. I have tried numerous brandsand styles of over, on and in the ear type phones and am impressedwith these ER6is. Of the variety of tips that come with the buds, myfavorites have been the foam tips. You have to roll them between your fingers before insertion to make them small enough to fit easily, butit's worth the small extra effort. I use these with my iPhone. I had themmodified by UltimateBuds.com who fitted them with the original AppleiPhone cables and inline speaker/control button. This combo works amazingly well.