newegg offers the Cooler Master Storm Sirus S Circumaural 5.1 Surround Sound Gaming Headset with Mic, model no. SGH-4000-KW5A1, for $49.99. This $10 mail-in rebate drops it to $39.99. With free shipping, that's the lowest total price we could find by $28. It features four speakers on each side, volume control and mic mute buttons, and interchangeable ear cups. Deal ends July 31.