I've tried the 12ax7 in v1 a few times over the years but honestly I can't get a good clear picture of the sound in my small music room. Yes I can hear a little more gain, a little earlier on, still get loud cleans though. Way brighter so had to roll the tone back which in turn lowers the gain but still seemed to have more gain than before. For a hot second I ran it wide open. Sounded awesome! So I'm thinking unmic'd bar gig volume would still be at about 3 1/2 which leaves the amp on the edge of breakup. Seems like it would still clean up enough to gig with. Anyone done it? Thinking about trying it out this weekend. Will be throwing a 12ay7 in my pocket just in case I find things to be too harsh.