I am a music lover and have in my school time (which is not so long ago) every day during the school pathway (about 1 hour daily) with my then Sennheiser CX 300 II heard music. After a half years these have then adopted thanks to cable break on one side. I got then guarantee means new and as they were then broken and my "new school" to 3-4 hours per day prolonged I was thinking next slightly better headphones (definitely stay in-ear, because they have a compact size and the sound at dementsprechendem seat is better to buy than in on- or around-ear models). First I tested the Bose MIE2i, these have, however, not exactly fit in my ear canal because they were a bit too narrow and I so still all outside noise heard also had this not a Y-cable and annoys me is when constantly hangs out the cable in front of me and on both ears "pulls".
After some consideration and compare, I then decided to go for the Sony XBA4 and find the sound simply outstanding. Clear treble and rich bass, thanks to 4 Balanced Armature drivers can enjoy all of this, especially to the fullest (literally) because thanks 4 silicone attachments in sizes XS, S, M and L as well as extra again 3 noise-absorbing essays, most of all pesky and annoying noises while enjoying music is no longer heard. The fit in the ear is almost perfect, despite the rather eye-catching size but already with me.
The sound is also crystal clear if you take a right turning up the music loud, simply indescribable. I had so many times zusammreißen not to cry tears of joy and well-being myself already, when favorite songs (mostly Dubstep, which indeed may vary from very Tonbild ago) Sometimes I see sometimes goosebumps.
The sound is so balanced that music every direction and every style sounds unbelievable clear.
The build quality is also very good and has an extremely robust and, unlike other models very durable.
The price applied to the first moment, although daunting, the Sony XBA4 in my opinion but worth every penny, music lovers will get their costs.