The DPA mics run true to spec with phantom power ranging from 5V to 50V with no change to specs. And you can count on DPA specs as be very accurate.
I've been doing sound for 30 years and can say with assurance that 134 will only be approached at the stacks themselves. Typical levels for Loud concerts is in the peak 120 to 125 range...and that is a concert I'll leave before hurting my hearing long term. Croud noise at a NHL hockey event, Playoffs, game 7, final period and the home team scores? 120 dB peak, for reference. measured many times....