GX80/85 External Microphone Input Modification (if you dare) - Cameras - EOSHD Forum
External mic jack mod for Lumix GX80 / GX85 – Webboggles
Panasonic GX85 Review
Amazon.com: Digital Camera External Microphone Compatible with Panasonic Lumix DMC-GX85 Mirrorless Digital Camera, XM-8 Mini Condenser Microphone, for DSLR's, Camcorders and Video Cameras : Electronics
Panasonic GX85 Review - Flash
External mic jack mod for Lumix GX80 / GX85 – Webboggles
Panasonic GX85 Review
External mic jack mod for Lumix GX80 / GX85 – Webboggles
Panasonic GX85 Review
Great New Features For Panasonic's Flagship Lumix GX8 Digital Camera