The filters come with a set of tweezers, and just hitting the side of one of the preinstalled ones is enough to remove the old ones. No disassembly except removing the ear tips. May take a few tries to do but even an adequately steady hand can manage this.

The Olina filters are a soft, gauzy thing that are easy to bend, so it’s good that they include 12 in a package. They just stick on with an adhesive ring in the same place as the metal ones you removed.

I didn’t notice much of any change to the bass. The overall tonality is certainly warmer, but that may be from a loss of some of that treble spike. That much I can definitely say is affected.