EMAD Onyx bass drumheads deliver increased low-end response and
powerful attack, with the incredibly cool look of matte black and
the ability to hone your tone with EMAD. Onyx bass heads are made
with a single 10mil ply, complete with EMAD foam rings to adjust
the head’s attack, focus, and sustain. Sonically, Evans Onyx
black bass drumheads have a more defined attack, with a
relatively short sustain, and a darker tone to match the
aesthetic. This coated drumhead also features Level 360
Technology.