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 PRO-Gaming Headset Review | Trusted Reviews
Amazon.com: Sennheiser Consumer Audio 507081 GSP 350 Surround Sound PC Gaming Headset, Black : Everything Else
Sennheiser PC 350 Special Edition Around-the-ear PC gaming headphones at Crutchfield
CentralSound Replacement Ear Pads and Headband Pad Cushion for Sennheiser PXC450 PXC350 PC350 PC350 SE HD380 PRO HME95 HMEC250 G4ME Zero Game Zero | CentralSound
Used - Like New: Sennheiser PC350 Special Edition High Performance Gaming Headset - Brown Box Version - Newegg.com