I have never had a problem. I am always being told to turn down. The drummer in my band is pretty damn loud as well. I usually put the 112 cab up on a stool so its about waist high. Some modules are better than others, the Mr. Scary works well. Tried a JTM module one day and it didn't seem to get as loud. That's without using the boost function as well. I bought this used and I do think the power tubes were changed out. There are Sovtek's in it now. Didn't think that was from the factory. Bias is set to the recommended, if I remember correctly right in the middle of the range.
In a room it does work better. On a stage where its just pointing outward it isn't as good but if it's mic'd and you are feeding monitors it works well. I use it all the time because I can throw it in the cab of my truck and not have to worry about something being in the bed if I need to make a stop. Live I use my Lynch Box head. I'll use it at rehearsals at if I want to rehearse with different tones. Depends on how close to a gig we are.