4.5 Really Great Headphones! Livewire2007 | 07/06/2011 | See all Livewire2007's reviews (3) Had previously only used Sennheiser headphones and had purchased the Sennheiser CX300 II Precision ECO phones from Play which sounded great. However, their build quality was very poor as the right earpiece kept failing. After two pairs decided to go for these Sony X-Bass phones after reading the good reviews here. When I got them I plugged them into my phone and was really disappointed with the bass, volume and overall sound quality. Was about to return them to Play and ask for a refund when I decided to try them in my iPod. The difference was astounding! Wonderful clarity of sound, warm, powerful bass but not at the expense of mid-range or top-end which also sounds excellent. I am using the large ear buds which seem to fit very snugly and do cancel a lot of background noise out. Volume is very good so you don't need MP3 player turned up full which is good. Even at high volume there is no distortion. For less than 17 quid these Sonys are a real bargain and I would definitely recommend them. All I would say is that to get the most out of these headphones you should probably use them in an iPod or decent MP3 player/phone. I can't comment on long term reliabilty as I've only just got them but build quality seems good.