Bosch LBB3442/00 Single-Ear Headphone for INTEGRUS and DCN Receivers

The LBB3442/00 is a single-ear headphone for Bosch INTEGRUS wireless language distribution and DCN conference receivers. Leaving one ear open is the point: a delegate keeps the floor sound of the room while the other ear carries the interpreted channel.

It weighs 25 g, wears on either ear, and terminates in a right-angled gold-plated jack plug that clears a pocket receiver worn on a lanyard. The 32 ohm element covers 100 Hz to 5 kHz at 114 dB SPL for 1 W at 1 m, a range chosen for speech intelligibility rather than music.