I find it handy to use headphones while doing things like tuner service, so I can hear test tones and such. What I don't like is having my head electrically connected to something I'm working on! Not to mention the annoying cable, as I already have too many of those going to test equipment. So, I found our local Ollies discount store has various Bluetooth headphones for the whopping sum of $13. I chose Aiwa. They're pretty terrible for music, not having much sparkle, but dandy for service. Also lots on eBay.
Then I ordered one of the various little Bluetooth transmitters on Amazon that has a 1/8" jack. Added a 1/4" adapter to it. Everything's battery powered, so just plug the transmitter into the headphone jack and pair it up with the headphones. Seems to work well, just be sure the Bluetooth isn't messing up anything with the tuner or amp, which so far doesn't seem to be an issue.
Then I ordered one of the various little Bluetooth transmitters on Amazon that has a 1/8" jack. Added a 1/4" adapter to it. Everything's battery powered, so just plug the transmitter into the headphone jack and pair it up with the headphones. Seems to work well, just be sure the Bluetooth isn't messing up anything with the tuner or amp, which so far doesn't seem to be an issue.