The Sennheiser e 604 is a compact dynamic cardioid instrument microphone widely used for close‑miking drums and percussion, especially toms and snare, thanks to its small size, high SPL handling, and built‑in drum clip. It delivers a focused cardioid pattern that isolates the drum while rejecting bleed from nearby cymbals and stage noise, and its fast transient response helps capture the attack and punch of sticks on drumheads. The e 604 has a frequency range of 40 Hz to 18 kHz and can handle extremely loud sources (up to about 160 dB) making it well suited for both live sound and studio environments. Sensitivity is around 1.8 mV/Pa, with a nominal impedance of 350 ohms and a standard XLR connection. The tough fiber‑reinforced housing resists impact and rough handling, and the included clip allows quick mounting on drum rims without a separate stand. Its lightweight build, reliable performance, and ability to withstand heavy stage use have made it a go‑to mic for drummers and audio engineers alike.