Perfect Mic Clamp for Drum Recording Get that just-right mic placement on your drums with the Sennheiser MZH604 Drum Clamp. This L-shaped microphone clamp is specifically designed to hold e604 and e904 microphones for placement on drum rims. Recording engineers at GearNuts trust this clamp for secure mic placement in the studio.Sennheiser MZH604 Drum Clamp Features: Quality constructed mic clamp for secure placement on drum rims and racks