okcrum
in your chest
Apparently your mileage varies
Consider for a second just how loud the ambient sound level has to be to produce a similar vibration in the headstock to a vibrating string in order to confuse the tuner. I'd bet you'd be at or near the threshold of pain, and even when the jukebox (with sub and thumper) has been painfully loud on my gigs, I've had no issues tuning.
Some tuners work better than others. If it's not a TC or Peterson, I'd suspect the tuner.



