123thefirst said:I think most modern Mesa amps use a lot of diodes in the channel switching circuitry, mostly for switching the LED's on and off.
AdmiralB said:The LEDs *are* the diodes.
ursinus said:That would be blasphemy! Look at the schematics, all tube distortion.....
msi said:Mesa generally uses varying amounts of gain with selective eq'ing between gain stages to change the tones of their amps. An example would be the Lonestar, the Normal, thick, thicker switch adjusts how the high end of the tone stack behaves. The clean/drive switch adds an additional gain stage. With the exception of the V-twin and some of the bass amps 99% of the distortion in mesa amps are from the tubes. Sometimes in cases such as the triaxis you can overdrive things like the fx loop but mesa did not design that stage for deliberate clipping.
msi said:On the Lonestar I believe it's just switching caps in and out. On the three channel dual rectifiers the pushed mode on the clean channel lets more gain through between gain stages.
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