I use the extension rings (red) to extend the distance between the drivers and my ear drums, i.e. I don't use them to get a deeper fit. They don't make a huge difference and I haven't analyzed why exactly I prefer them. I only know I prefer the sound I get from the red extension rings. It's probably very individual, but I definitely feel they add to the usefulness of the DN2KJ. At least, I feel it's a good idea to explore the effect before dismissing them.
11/28/15 at 12:01pm