Call me unadventurous but I keep going back to Ampegs recommendation for a rock sound: the tube gain and the master volume on 10, the gain to taste. My bass is set on full volume so I use the gain set the volume. The sound is great but I am leery of having a powerful amp set on 10. At best it creates more noise with the power amp on full. Id be interested in hearing others experience with the settings on this amp.