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.

The Jo-Ral 4A Bass Trombone Straight Mute has an exceptional acoustical design and all-aluminum construction that gives it a smooth, distinct tone quality. It allows a free-blowing sound throughout the instrument's natural range, encompassing even the pedal tones