I was given a QC25 by a friend. The cable was not included. I have tried several standard 4-conductor 3.5mm connectors, but they will not fit into the socket. Should a standard 3.5mm jack work? Can I order a replacement cable? Could there be something stuck in that socket?
Thanks for reaching out to the Bose Community. Welcome to the site.
The QC25 uses a 2.5mm audio connector input on the headphones, so the cable you will require is a 2.5mm stereo to 3.5mm stereo jack cable. These can be purchased by reaching out to local support. Details can be found here.