A pre‑polarised condenser designed for bass drums (and other low‑end instruments), the 4055 features an open‑cardioid pattern for tight off‑axis rejection and a remarkably flat 20 Hz–20 kHz response (with a gentle 6 dB lift at 10 kHz for added click). It handles up to 164 dB SPL without distorting, thanks to its robust construction and integrated shock‑mount.