Luckily its a 101db day not a quiet 98db day then (from memeory when I used to do sound testing, 3 db is twice as loud) so I am in with a chance. Maybe disconnect the rev counter and claim its doing lots of RPM...lol

I will take standard cans with me for worse case scenario, also got some almost new carbon fibre cans which I will try this weekend, if not I could also risk my almost new titanium JHA cans.....failing that....cry!