I worked for a short time in the late 80's for a guy running a standalone Amp repair shop. Before I left, he gave me a JCM800 2203 chassis that had been striped of it's PC boards, filter caps and choke. Basically only the PT, OT and the tube sockets remained. The Impedance selector switch was also gone. Around 2001 I built up a set of boards on Vector board with Flea clips using the preamp of a JCM800 1986 Bass amp, the one with the Sweep control. I never got it to sound the way I wanted, so I just set it aside.
Flash forward to around 2016, a guy wanted me to clone a Rockaforte Custom 80 with some small mods. He loaned me one to Blueprint. It's basically a 2203 without the input switching nonsense. I built three boards on G10 with eyelets, a Preamp, Power amp and Power supply. Well, he didn't like it. Reason I found out later was I used Audio taper pots for the Gain and Master Vol instead of Linear pots like the Rockaforte. He likes to set all the pots at 5.
Still haven't found a headshell for it.
Flash forward to around 2016, a guy wanted me to clone a Rockaforte Custom 80 with some small mods. He loaned me one to Blueprint. It's basically a 2203 without the input switching nonsense. I built three boards on G10 with eyelets, a Preamp, Power amp and Power supply. Well, he didn't like it. Reason I found out later was I used Audio taper pots for the Gain and Master Vol instead of Linear pots like the Rockaforte. He likes to set all the pots at 5.
Still haven't found a headshell for it.
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