Promark OBD4 -Promark OBD4 Optima Medium Large Marching Bass Drum Mallets phone-plug A single AAA battery will

A single AAA battery will keep it running for up to 10 hours

20K Ohms balanced

helping minimize errors in the timecode signal

MKH 800 and MKH 30

Promark OBD4 -Promark OBD4 Optima Medium Large Marching Bass Drum Mallets phone-plug A single AAA battery willProduct Details: Elliptical Head Prevents Dents Weight Ring Adds Velocity Rebounds Easily From Head Strong Hickory Handles Best Suited for 24" 28" Drums ITEM DETAILS ProMark Optima Marching Bass Drum Mallets feature an elliptical hard felt head specially shaped to help prevent denting your bass heads. The thick 'weight ring' just underneath the mallet head adds mass and velocity to each swing, giving you more power and volume with less effort. The