Hello everyone! I have a Marshall 100 HDFX head with a 4x12 cabinet and when I rehearse with my band I have the typical problem of every guitarist, I can't hear my guitar! xD The typical solution is to turn up the volume, but playing in a group if we all apply that practice will end up exploding the place. I try to use my headphones at the same time my head is outputting sound through the 4x12 but I hardly hear anything. lack of power in the headphone output? or does it not work directly?

I would like to know if anyone has tried this before and opinions on it please.

Thanks in advance :)