I have always previously used the excellent creative labs ep630 in ear headphones, as I listen exclusively to heay rock music and the ep630s handle deep bass with ease. I find it can sometimes be a long process to get the buds settled properly in the ear to benefit from the sound, and thought I might purchase a cheap set of these JVC 'phones and transplant the 'marshmallow' buds onto my ep 630's. I wasn't really interested in using the JVC's, as I'd read the reviews saying that they are unreliable and more worryingly for me, tinny. When mine arrived I popped them in to see how tinny they were before I pulled them apart. Well, contrary to the popular view, I was amazed by these earphones. They are unbelievably comfortable and fit superbly into my lugs, and the sound quality is superb. They offer a really deep punchy bass sound with no distortion, and the mid range and treble are well defined and crisp. The overall sound quality is well balanced, but driven by that powerful bottom end punch. Maybe it's just that these happen to fit my ears perfectly, or maybe other reviewers mp3 players do not suit these earphones, my mp3 player is the Philips 16gb go-gear opus which does reproduce a great bass sound, and these earphones enhance the performance considerably, even more than the ep630's mentioned earlier.
The purpose of this reveiw is to balance the many less than positive reviews posted about the product. They nearly stopped me buying them, and my listening experience would have been the poorer for it.