I used to frequent the Marshall rooms in Stroud . I’m surprised I can still hear, although I’m down to 14kz nowI went to see Status Quo in 1976 at the Glasgow Apollo theatre.
Never heard anything so loud in all my life.
I had to stand behind a concrete pillar to reduce the volume a little.
But still couldn't hear for 3 days afterwards !
In more recent years there was a newspaper article saying the band had their hearing checked and they were all fine !
Could be all that long hair blocked the sound a bit ?