For 30 years, Jo-Ral founder Joe Alessi has designed premium-quality mutes, refining Jo-Ral products to provide ever-greater levels of acoustical and tonal performance. His designs have been tested and found worthy by some of the most talented professionals in the music business. Used extensively by leading brass players are found in every musical venue, from symphonic band and orchestra to jazz and studio sessions.

A variety of materials are available to provide the sound characteristics that meet every musician's needs. The Copper Bottom mutes are the perfect choice for a darker, more mellow effect.