Amazon.com: Headset Combo Y-Adapter for Sennheiser PC 360 SE, PC 350, GSP 300, Game Zero and Game ONE Gaming Headsets Compatible with Xbox One, PS4 and Smartphone Adapter : Video Games
Sennheiser PC 350 SE Headphones - general for sale - by owner - craigslist
Sennheiser PC 350 Special Edition Gaming Headset - electronics - by owner - sale - craigslist
Amazon.com: 3m New Replacement Cable for Sennheiser PXC450 PXC350 PC350 HD380 PRO Headphones : Electronics