The PRO4AA features dynamic elements for an exceptionally wide frequency response from 10-25,000 Hz. Designed for frequent use over extended periods, the PRO4AA's durable steel and rubber headband is generously padded. Adjustable slide bars ensure a snug fit, also critical for hearing every note and keeping unwanted sounds out. The heavy-duty, single-entry ten-foot coiled cord affords ample flexibility of movement. It includes microphone mount hardware for complete versatility. The PRO4AA has a 6.3mm (1/4") plug and an 8 foot coiled cord.Whether you are a sound professional or simply love music, the PRO4AA will deliver excellent isolation, accurate sound reproduction, and the excitement of a live performance to your recording.