As one of its daily deals, Best Buy via eBay offers the Astro Gaming A20 Call of Duty Wireless Headset for Xbox One, PC, & Mac for $99.99 with free shipping. That ties our mention from three weeks ago as the best price we've seen for this headset. (It's a current low by $28.) It features an omni-directional microphone and frequency response of 20Hz to 20kHz.