Yamaha Acoustic EQ Venting System

10 sonic portals machined into Yamaha SFZ or MTS snare ring provide real time tuning for any environment. The adjustment, in total control of the player, allows 14" marching snare drums to be instantly vented, increasing dynamic range, timbre, and volume. Retrofits to any new or existing Yamaha marching snare drum. Available in 14" diameter.

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