topic Walkman WM-20 in Portable Audio https://community.sony.se/t5/portable-audio/walkman-wm-20/m-p/4003180#M13966 <P>does anybody own a vintage Sony WM-20 Walkman?&nbsp; If so what in mm is the diameter of the connection to an AC-DC adapter? Thank you</P><P>&nbsp;</P> Thu, 17 Sep 2026 13:08:48 GMT sonydc 2026-09-17T13:08:48Z Walkman WM-20 https://community.sony.se/t5/portable-audio/walkman-wm-20/m-p/4003180#M13966 <P>does anybody own a vintage Sony WM-20 Walkman?&nbsp; If so what in mm is the diameter of the connection to an AC-DC adapter? Thank you</P><P>&nbsp;</P> Thu, 17 Sep 2026 13:08:48 GMT https://community.sony.se/t5/portable-audio/walkman-wm-20/m-p/4003180#M13966 sonydc 2026-09-17T13:08:48Z