Evidently, among electric guitarists, the sonic thirst for Plexi-style overdrives is hard to quelch. Athens' Tsakalis AudioWorks is the latest stompbox builder to release a Marshall-in-a-box pedal inspired by the tones of that company's legendary tube amps that defined the sound or rock'n'roll. Using jfet technology, the Room #40 can…Click on the title for more