Cheers for all the suggestions. I did think about increasing the input as a possibility, but must admit I haven't tried that yet. The guy I saw playing through the Marshall head did have some pedals (and possibly a SansAmp) in his chain, but definitely no distortion/overdrive effects. And he was using a P Deluxe, whereas I was just using my passive P. Was going to try the Stingray to see if it helped, but I do have some overdrive pedals I can try to increase pre-volume without adding distortion. I was a little surprised the amp didn't have a GAIN control knob, and only a master volume after the EQ settings.
By the way Cheddatom, what's the JCM800 plug-in you're talking about? I would assume it's some kind of effect you use, but what equipment is it running on to get the sound. Just curious.
It's my first dive into the world of valve-dom, so not really sure what to expect. I did all the internet research I could, but must admit I'm surprised at how loud it is. I've not tried it in a band setting yet, and I understand (though possibly incorrrectly) that 100W tube power does not equate to the same perceived volume as 100W solid state, but this thing sounds pretty impressive. Most would probably say I'm nuts buying this beast when I've got a super-light 500W LMII amp, but I guess I'm still in search of "the sound in my head", and weight isn't a big consideration... yet.