The 100% Birch 6-Ply Shells are focused and allow the drums to speak quickly and project clearly. Rack toms have a punchy brightness while the lower frequencies of the bass drum and floor toms are supported with enhanced fundamental and body. SONIClear™ Bearing Edge allows the drumhead to sit flatter and make better contact with the shell. The result is a stronger and deeper fundamental pitch, effortless and consistent tuning, and a significantly expanded tuning range. The SONIClear™ tom suspension increases overall resonance by preserving vibration in the shell and keeping stress away from the tension rods, helping the heads stay in tune.