Amazon.com: Bionik Mantis Attachable VR Headphones: Compatible with PlayStation VR, Adjustable Design, Connects Directly to PSVR, Hi-Fi Sound, Sleek Design, Easy Installation : Video Games
Made a few modifications with the Rift S. Bionik Mantis and Shoelace for the Touch lol : r/oculus
BIONIK(TM) Bionik Mantis Detachable On-ear Headphones For Playstation Vr | eBay
Bionik Mantis Clip-on Headphones + Over-Ear Pads for Playstation VR 714983531955 | eBay
Hands-On With Bionik's Rift-Style Mantis PSVR Headphones
Bionik Mantis are a pretty solid fit with the BoboVR M2, not perfect but after trying 5 sets they are the best snap on option and you don't have to mod them