After experimenting with a single ply head and not finding the sound I was looking for, I tried this EQ4 calftone drumhead with a single ply calftone as resonant head. The sound is amazing. Very open and still controlled. If you tune it higher you get this be-bop sound, without overtones or unwanted high tones. The bass drum sounds full, open and controlled. I strongly recommend the combination Calftone EQ4 (batter) and single ply (reso).