Everything you need to know about the Plantronics HW540 corded headset. Plantronics HW540 Headset: In late 2014, Plantronics announced and started shipping the EncorePro HW540 corded headset. It includes a noise-canceling headset, three attachments for different wearing styles (headband, ear hook and neckband), a soft ear cushion, a clothing clip for cord management, and a cable ending with a Quick-Disconnect connection. As with all business-grade H-Series headsets, an amplifier … Continued