These are good earphones, sound quality is acceptable, not bad at all, and for the price they are fantastic. The bass is decent and the treble is a bit better than with the earphones I've been using the past few years (theezGear SX50 ezEars SX50 earphones 2007 White.) The J-Buds are slightly less comfortable than the ezEars but I wouldn't go so far as to say the are uncomfortable -- I've worn them for as much as 11 hours straight and for many of those hours I forgot they were there. For the price you can't beat them. 

Question: How is the quality?
Answer: sound quality is acceptable