Backun Q-Series Bass Clarinet - Low C, Grenadilla, Silver KeysBackun Q Series Bass Clarinets set the standard for what bass clarinet playing should be. Designed with an intense focus on exceptional intonation throughout the registers and a beautifully engineered mechanism, this series of professional bass clarinets has no equal. From the triple register mechanism to over and under cut tone holes, stunning nickel silver metal neck and bell and a thoughtfully designed custom Compact Marcus Bonna Case with bass