- New Harmony Wolf Suppressor, Cello
New Harmony (NHM) Wolf Suppressors, being entirely made of brass, have many advantages over traditional wolf killers made with a thumbscrew, a lock nut and a rubber lining. NHM offers a variety of weights to allow the lightest weight necessary to tame the wolf. It stays in place but can easily be readjusted. Since the material is made with only one material that is in direct contact with the string, NHM suppersors offer little to no noticeable effect on the instruments natural sound quality.