Sound Reduction Cymbals from Total Percussion are specifically designed to reduce volume for 24/7 practice, but not enough to lose the tones and pitches of the different sized cymbals in your set. SRC Cymbals offer a reduced sound playing level for smaller acoustic gigs that can also be micd through a PA. SRC Cymbals work perfectly in conjunction with Remo Silentstroke drum heads for low volume practice on your own acoustic kit.