Inspired by the Maven Peal thread I started to wonder, how come some amps have master volumes that are close to useless and others that sound pretty good? For example most Marshalls have pretty crap master volumes, the amps sound thin and way trebly at lower volumes. On the other hand I found that the master volumes on for example the Orange Rockerverb and Mesa Lone Star worked quite well. Even though those amps still sound better at higher volumes, the tone was quite pleasing at low volume too. So what do some manufacturers do differently with the master volume? What ingredients make a good master volume? Just for the hell of it, lets exclude "specialty" things like Power Scaling and the Maven Peal stuff from the discussion and concentrate on more "normal" MVs.