Working on your sound, articulation, and dynamic contrast is much easier with Deflector since you hear yourself much better. Using the Deflector is similar to playing against a wall but more direct and far more effective. Also, you can practice softer (your neighbors will thank you!). During a rehearsal or in a gig most of the time you don’t hear much of your own sound. Using the Deflector changes all that- with the Deflector your true sound come straight back to your ears, loud and clear. You hear what the listener hears, your sound.