Marshall 1987XL

I replaced the blown output transformer in this amp with a mid-80's Drake.  

I also converted the circuit to the classic JMP 1987 (except for the FX loop), replaced the cheap box capacitors with PVC/6PS series mylar caps, and installed tube/transformer voltage spike protection features.  

One of the EL34s had lost vacuum, so I installed a pair of GTEL34Ms, which I really like in classic Marshall circuits, and threw in some better-sounding preamps as well.  

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