TheDAddario H-Ligaturewas developedafter a long andintensive researchas a "retro" version of thefamousHarrisonligature,which was used bymany greatclarinetistsandsaxophonists.ThenewH-Ligatureholdsthe bladefirmly on thetableof the mouthpieceand thusimproves the contactbetweenmouthpiece and reeds.Leaksalong theside panelscan be reduced.
Theexcellentretrodesign providesexcellentspeech. Each end of the"H"is designed as apressurepoint onthe blade.Thus, thesheet isevenly pressed againstthe mouthpiece.