Larry's grounding is design by ''Larry'' A german amp guru very active on the Metro Amp forum. Instead of the regular ground buss wire solder on the potentiometers, Larry used 6 specific location on the chassis to connect the grounds in a attemp to minimise ground loop noise, mine is very low on hum.
One side of the brass bracket is secure to the chassis using a transformer bolt and on the other side the bias pot is simply solder to the bracket.
Actually the picture is not very good (it wass shout with a flash) but the ''red'' wires at the pots are pink. The board color is not right on the picture, it is dark chocolate brown.
I don't know yet if I will add any mods like the PPIMV, it sound very good like it is.
Thank for looking
Jean
My new JTM45 clone
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