Although natural reverberation in rooms or loudspeakers often is a good thing to have in audio, too much of it can cause unwanted reflections that seriously affect sound quality. Acoustic foams or speaker foams from DAP Audio are a simple solution to eliminate these reflections within your studio or rehearsal room and, as a bonus; these foams will also absorb a lot of volume!
Additionally, the use of flightcase foam in cases will help to keep your equipment protected and free of scratches and dings.