I love my SV20, it does everything I need, except it's not two of them, Lol!! I was looking for a JTM style amp to run in parallel and/or different flavour, but can't find any "small wattage" versions around. I'm seriously thinking of getting another SV20 and modding it's preamp to JTM specs. I know the JTM is tube rectified, and the plexi/sv is ss, and the power section is fixed vs cathode, but these sort of balance each other get some compression (bloom?) from the sv power section akin to the tube rec of the JTM - not perfect but good enough methinks. Pretty sure kt66 can run in the sv too if that added true JTM flavour, I have successfully had 6ca7 and is 6v6 running fine with great aural results, but given fundamentally a modded sv isn't a spot on JTM anyway, close enough is fine So I'll concentrate on the pre PI bits. A couple of notes from my previous inspection of the sv: High Treble Bright cap is 4n7 Split v1 cathode V1b 820r with 330uF (Channel 2, Normal) V1a 820r with 0.68uF (Channel 1, High Treble) Next on my list is to take the sv apart Gain and trace some more. Anyone got any gotchas or guidance before I dive into this?