The preamp section receives the guitar’s output and boosts the incoming signal to line-level. It also has EQ and gain controls to let you shape the overall tone of the signal. The preamp section of a tube head
"So, all tubes are not the same, because all oxide-coated cathodes are not the same. In part, it’s why a Sylvania 12AX7 doesn’t sound exactly like a Brimar 12AX7, even though their technical specifications are the same on paper... no wonder some manufacturers chose to keep their ...
a larger Axe Fx, and some other stuff,” says MacArthur. That was gone. In its stead MacArthur rolled in the super-compact Synergy Syn-1 preamp module, which features two channels driven by a pair of two 12AX7 tubes, running it through a pair of Fryette LXII 50-watt...
Directly in the center of the front panel is another rectangular opening containing four items, they are an LED that is illuminated red when in standby and green when the tubes are warmed up to operational status. Next is a switch to turn power On or to Mute the output...