The 1959HW is a handwired reissue of a circa 1967 100W Superlead head. Since 1967 when the JMP (Jim Marshall Products) Plexi panels were introduced, the Superlead head has been the benchmark for all-tube distortion and tight crunch. Tube lineup includes 4 EL34s in the power section and 3 ECC83s in the preamp. True bypass effects loop, 3-band EQ, and presence control.