I have the same problem with my Spider IV 75. My master volume is very sensitive around 9 o clock. I can't put it over than this because, it jumps to a very too loud sound.
I understand that i can set my channel volume lower for every patch. That's great. This will solve my issue. Almost. What about the factory patches? It seems that i can't change them. So, there is a risk for my ears if i set my master volume at 12 o clock and by accident, i go back on a factory preset. This risk can cause serious damage to my ears.
My question is: Is there a way to have a firmware update with factory patches at a lower channel volume?
Thanks for your help.