Hey, I haven't been around for a while. I think this might be the best forum to ask my question. I have an SVT II bass head for years. I was playing in noise bands, and was use to set the gain knob on 2,5 (there is no master volume knob). It was sounding good, but too loud to some live sound technician. Gain on 1, sound's not that good, so i took two power tubes off the amp, in order to use the same gain input, having sorta the same sound, but quiter. It worked with 4 power tubes instead of 6, for a year or two, before it became unstable. It's been for repair since. I wonder if what i did is related to it unstability... I'm about to get it back, and don't play loud bands anymore. I want to keep it, but will probably need to keep it quiet. How could i make it even quiter and keep sounding good? Would taking two more tubes out a good idea? Thanks.