Designed for superior intonation. Denis Wick DW5527 Trombone Practice Mute British-made Denis Wick mutes are acclaimed worldwide for their sound quality intonation in all dynamic ranges plus superb workmanship. Denis Wick practice mutes are perhaps the best teaching aid ever invented. Not only do they fulfill the need for the in-tune painless practice so essential in the development of every young player and an indispensable hotel mute for the professional but they also make possible an enormous improvement in tone quality using the entire vital capacity as a vibrating air column by opening the throat spaces through playing loudly in the low register.Features: One of the best selling mutes in the world Good for quiet practice Suitable for Tenor Trombones not Bass or Alto Whether they are being used in teaching or practicing Wick practice mutes can bring the sound to the edge of silence. Offer brilliance and carrying power which make them the choice of the world s finest professionals. Excellent intonation. Product Code: DW5527