Amazon.com: EPOS I Sennheiser GSP 600 – Wired Closed Acoustic Gaming Headset, Noise-Cancelling Microphone, Adjustable Headband with Customizable Contact Pressure, Vol Control, for PC + Mac + Xbox + PS4, Pro : Video Games
GSP 670 from EPOS | Ultimate audio, ultimate performance, ultimate game
Sennheiser GSP 670 Wireless EPOS 7.1 Premium Gaming Headset Black Headphones NEW 840064400343 | eBay
GSP 370 from EPOS | A single charge, 100 hours of wireless gaming