As one of its daily deals, Amazon offers the Sennheiser PC 363D High Performance Surround Sound Gaming Headset for Windows, model no. 504567, for $146.99 with free shipping. That's the lowest total price we could find by $56, although most retailers charge around $300. They feature 7.1-channel Dolby audio, 15Hz to 28kHz frequency response, noise-canceling technology, around-the-ear open-back earcups, velour ear pads, microphone, and 3.5mm and USB connectors. Deal ends today.