I very recently bought a nearly perfect play5 gen1. It came with all the papers and such from the original owner. Got it set up, no problem. However, no matter how loudly I have the volume set, it is barely noticable. It's nearly silent. I've reset and rebooted a number of times with no difference. It doesn't matter what input I'm using. I figure it's probably caused by the problem outlined in this thread,
https://en.community.sonos.com/speakers-229128/fix-for-sonos-play-5-with-very-low-volume-6856289
but on the off chance it could be something else, I thought I'd ask. Please be patient, I'm new to Sonos.