The Sony WF-C510 delivers a rich and lively listening experience. We tested this ourselves by playing music and making a few phone calls. The quality was outstanding! That said, Sony is already a brand I rate highly for picture and sound quality. At this price, these earbuds are hard to pass up. You can adjust the sound to your liking using a five-band equalizer, alongside the preset options. Bass lovers get a separate Clear Bass slider to help dial in the bass they want for a particular track. With Ambient Sound mode switched off, the earbuds can easily last a working day on a single charge. Enabling DSEE drains the battery a little faster. Want to know more about DSEE? Take a look here.