TrumCor mutes are carefully hand-crafted with wood and a specially formulated resonant fiber material. They create a muted tone that is vibrant, warm and responsive. TrumCor mutes produce a beautiful sound, and at the same time preserve the pure timbre of the trumpet in all registers and dynamicsSuper StealthLike the Lyric Stealth, the Super Stealth has an even even response in all registers. It is ultra-soft, with more sound absorption and resistance than the Lyric Stealth.