These are Extra Bass headphones from Sony, which offer up some really good sounding bass. The bass is nice and deep, and very thumping. So it can really rock your ears. If you listen to music that has a lot of bass, then this is definitely worthwhile. Audio quality here is really good. Not only do you get some boomy bass, but you are also getting some crystal clear mids and highs. And the bass doesn’t over power the mids and highs, which is also very important. With the Sony Headphones connect app, you can adjust how much bass you are getting too. The Sony WH-XB900N are a pair of over-ear headphones, which are also pretty thick. That’s a good thing because they are going to be very comfortable to wear for many hours on end.  And that’s a good thing since the battery life here is really good. We’re looking at 30 hours on a single charge. That’s with noise cancellation on, if you turn that off, you can likely get up to 35 hours on a charge. With noise cancellation, you are going to be able to immerse yourself into your music and tune out all of the noise around you. Definitely a good thing to have on a pair of headphones at this price point. These are also Bluetooth, making them great for those that are just now buying a smartphone that doesn’t have a headphone jack. There’s also NFC which makes pairing these with your smartphone a whole lot easier.