Used by the World's Finest Piano Manufacturers for More Than a Century
Blüthner - Bohemia - Bösendorfer - Estonia - Fazioli - August Förster - Grotian-Steinweg
Guangzhou - Kawai - Mason & Hamlin - Petrof - Pfeiffer - Pleyel - Pollman - Pramberger
Royale Piano - Rönisch Hupferd - Samick - Sauter - Schimmel - Schulze - Steinberg
Steingraeber - Steinway & Sons - Charles Walter - Whelpdale - Young Chang - Zimmermann

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Underlever System

The Underlever System, or Back Action as it is commonly called, is not visible to the pianist but controls the intricate system of levers and felt which dampen the strings causing the sound to stop. Most vintage pianos being restored need a new back action also, and this unique component design allows it to be custom fitted to every model of Steinway, Mason & Hamlin, Chickering, Knabe, and most other quality grand pianos.