The Soulo Mute SM7525 Adjustable Cup mute for trumpet! Unlike any other trumpet cup mute, Soulo Cup is perfectly in tune in all registers, has minimal back-pressure, and no 'squirelly' notes. The specially formulated fiber materials and manufacturing process allow Soulo Cup to offer the traditional vintage cup mute sound of the Ray Robinson and Mica mutes, adjustability and perfect pitch all in one mute. It is considerably lighter than other brands. All these options allow the trumpet player to blend perfectly in a section comprised of different brands of trumpet cup mutes. The Soulo cup mute is perfect for performance and sound recordings, as it will never fall out the bell due to its light weight and its unique neoprene composite corks. Endorsed by US and international trumpet icons like Bria Skonberg, Wayne Bergeron, James Ackley and many more. Made in the USA by trumpet player Mike Jarosz.