The SH 230 is an entry-level over-the-head monaural headset that offers premium quality, safety & comfort features. The SH 230 incorporates Sennheiser's unique, patented Active Gard sound compression technology to guard against acoustic shock & maintain distortion-free reception. The sophisticated Active Gard circuitry protects the user's hearing from sudden & unexpected noise levels over the telephone system, limiting the maximum SPL to 104d B. User comfort is assured through ball-mounted speaker capsules, which ensure an optimal fit to the ear, with double-sided headband adjustment guaranteeing the best possible fit on the head. Acoustical foam ear cushions effectively channel sound into the ear while keeping distracting external noise out.A flexible & pivotable boom arm makes for easy positioning of the omni-directional microphone. The headband is detachable for easy upgrading to an ear clip. Frequency response of the microphone & speaker capsules is 300 Hz
- 3.4k Hz. Available in black with a dark gray-colored C-clamp & a Kevlar reinforced 1 m/3.3 ft. cable with Easy Disconnect connector, standard accessories also include a cable/clothing clip & a carrying bag. Optional accessories include leatherette ear cushions, replacement acoustical foam ear pads, microphone windscreen, ear clip, & replacement side-support.