Shure BRH440M-LC Dual-Sided Broadcast intercom Headset with Built-In Microphone

Dual-sided broadcast headset delivers natural, highly-intelligible vocal. Features include deactivation of microphone when not in use, a closed-back, circumaural design, an adjustable, comfortable headband, and a 270-degree positioning range.

Features:

• Closed-back, circumaural design provides superior isolation from background noise
• Dynamic microphone delivers natural, highly intelligible vocal reproduction with cardioid polar pattern and frequency response optimized for communication in loud environments
• Ergonomic, adjustable headband with premium padding and optimal coupling force for long wearing comfort
• Flexible boom microphone pivots 270 degrees for left or right side wear and precise positioning
• Flip-up mute function deactivates the boom microphone when raised vertically away from the mouth
• Single-side Shure 6-pin connector enables connection to a variety of optionally available cables
• Legendary Shure durability designed under rigorous quality standards to withstand the demands of everyday, professional use
• Ear pads and windscreen provided for a long product life

Specifications:

• Net Weight (without cable): 341 g (12.1 oz)
• Microphone:
  • Type: Dynamic (moving coil)
  • Polar Pattern: Cardioid
  • Frequency Response: 50 to 15,000 Hz
  • Output Impedance: 200 Ohms
  • Sensitivity (@ 1 kHz, open circuit voltage):
    • -67.0 dBV/Pa (0.45 minimum)
    • 1 Pa = 94 dB SPL
• Polarity: Positive pressure on diaphragm produces positive voltage on pin 1 (red wire) with respect to pin 3 (shield)
• Headphone:
  • Transducer Type: Dynamic, Neodymium magnet
  • Driver Size: 40 mm
  • Frequency Range: 15 to 27,000 Hz
  • Sensitivity (@ 1 kHz): 101 dB/mW
  • Impedance (@ 1 kHz): 300 Ohms
  • Maximum Input Power: 1000 mW