Harkening the famed “sewer pipe” drums coveted by top orchestral players, this concept has been modernized to offer range and projection suitable for the most dynamically demanding musical passages. Pairing the formidable 6.35mm Seamless Cast Iron Shell with die-cast hoops,this instrument yields unparalleled focus, extreme sensitivity, and undeniably unique tone. The OP-01 Strainer: The smooth and silent OP-01 strainer is a simple and classic functional design featuring a laser-engraved knurled vertical fine tuner adjustment. I Lugs: To achieve a classic and elegant look as well as maximum shell resonance, the Opus One series drums feature the chrome plated "I" lug. Hybrid Snares: Each model features its own unique set of hybrid or single-type snare cables in order to maximize the sensitivity of the instrument with which they are paired. Integrated Bridge: The integrated bridge sets the optimal angle allowing the snare cables to establish a true and consistent point of contact with the resonate side head. The result is extreme responsiveness at all dynamic levels and playing areas of the drum. Claw Hook: The revolutionary “Rigid-Cast” claw hook design utilizes an oblong receiver hole enclosed in a diecast housing which prevents cracking, ensures proper tuning alignment, and allows flexible tolerance for both synthetic and natural heads. Head Selection and Drumdial™ Optimization: Each model comes with specific head combinations and specific Drumdial tuning suggestions through extensive testing and collaboration with world renowned artists.