The DN-1000s feature a Dual Balanced Armature and Single Dynamic Driver Hybrid driver setup. This triple driver design gives these earphones a naturally rich bass with excellent treble extension and crystal clear clarity.
The DN-1000 produces very clear mids and highs from the balanced armature drivers and manages to pull off clean deep bass response from it's dynamic divers. It produces plenty of lower bass without drowning out the mids.
The o-rings that are included allow for the earphone to have a deeper insertion. This allows you to get a more comfortable fit and also improves sound quality by ensuring a sercure seal on the silicon tip. If you want a bit more bass then with a tip change and o-ring change you can achieve this, the same is true if you want to reduce the bass level.