DH3000 is a single-sided noise-canceling headset. It is very light, with ear cups and cushions enlarged from previous models to enhance comfort. Other features include a set-and-forget volume control and fully flexible boom. This headset dramatically improves the clarity of communication and does not require batteries or panel be power-active noise reduction powered by microphone bias. All DH Headsets require a LC1500 lower cord unit when ordering.