-designed and made in U.S.A.-, modern solid-state circuitry, simple screw-in replacement of original transistor circuit... see more-designed and made in U.S.A.-, modern solid-state circuitry, simple screw-in replacement of original transistor circuit board inside amplifier box
Similar features as the knob type top post version, but designed for side post batteries.Similar features as the knob type top post version, but designed for side post batteries.