The Tung-Sol legacy continues with the introduction of the new 6L6GC STR. The ultimate in musical tone and smooth overdrive, the STR delivers the sound that established Tung-Sol as the benchmark of quality. Built to the same 'Special Tube Request' specs of leading amplifier manufacturers of the 1960's, the 6L6GC STR is a rugged and reliable power tube for use in the most demanding guitar amplifier circuits.