The B-1 features a pressure gradient, capsule that delivers a transparent 20Hz to 20kHz frequency response while handling with an SPL rating of 138dB. The B-1 also gives a switchable -10dB attenuator to capture high-volume signal sources without distorting, as well as a low-cut filter to eliminate infrasonics caused by floor rumble and other turbulence. A Low-frequency roll-off switch minimizes low-end noise at 75Hz.