For under $40, the CX 300 IIs provide good sound quality, with strong, but not overpowering, bass. Despite their low price, these earbuds also come three sets of swappable earplugs to help you get the best fit. While some users might find the asymmetrical cable slightly awkward, these are still a great option if you want to replace the earbuds that came with your portable media player, and don't want to spend as much as you did on the player itself.