I modded my Rift CV1 to have a 3.5mm audio jack, and how you can too! : r/ oculus
1pair Vr Headphone For Oculus Rift / Rift Cv1 Vr Headset Accessories Replacement Parts - Vr/ar Glasses Accessories - AliExpress
Amazon.com: Geekria QuickFit VR Short Audio Cable Compatible with Oculus Quest 2, HTC Virtual Reality Headset, 3.5mm Male to 2.5mm Male Cord, Replacement Cable for VR Headphones (1ft / 25cm) : Video Games
Amazon.com: Oculus Sensor (Includes 16Ft. Repeater Cable) : Video Games
Oculus Founder Vows to Create Audio Repair Kit for Rifts Out of Warranty – Road to VR
Oculus Rift CV1 Unboxing & First Impressions
For Oculus Rift S/rift Cv1/go/quest/ Rift Dk2 All-in-one Virtual Reality Vr Glasses Data Charging Cable 3m For Oculus Quest Vr - Cables - AliExpress
Commercially available Oculus Rift CV1 alternative cable replacement available - old tpcast stock - $12 : r/oculus
Oculus Rift broken Cable repair attempt : Brian Dorey.com blog