Only one input fet.
True and it made nice smell to boot.
Probably smell the same later tonight when I plug in the whammy😬
That’s the melting Tupperware.
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Can’t find one big enough so will just lay it in a cardboard box to try it out…doesn’t smell as bad as plastic.
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Yeah.
An engineer’s idea of ‘helpful’ labelling… 
Good to see it’s working as expected…
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Something (just) within my technical competence to wire-up correctly -
Must be close to 3 years since I last made a pair of these! 
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6b4g amps are really sensitive but rather than use a dropper resistor managed to find some NOS panasonic single channel pots I can put in each of the mono amps.
Footastic and adjustable 
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what value?
50K
should be fine
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assumed they are the old Panasonic ones that are supposed to be better than Nobles? have never seen them in the flesh so it was a punt.
I’m not aware of them.
Back in the 90s they were about £50 each for the stereo version, I used them in the copper Model 2 preamps, they were really nice, but v spendy and v hard to get hold of. I preferred them to Alps black and Noble i seem to recall.
Good luck with 2 pots in 2 monos, you can go rubber room crazy trying to get them at exactly the same level, ask anyone who ever had a Croft preamp 
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What valves are in the 6b4g monos?
6b4g
(and PCC88)
let’s hope it isn’t 88 - 88 - 6B4G, that would have stupid high sensitivity!
with your M7 and those speakers you probably only want 88 - 6B4G