-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
-reproduction made in Taiwan-, without tilt wheel, "BPC" metal type (includes wiring & bearing)-reproduction made in Taiwan-, without tilt wheel, "BPC" metal type (includes wiring & bearing)