Alright! Experimenting with LED's-to-ground off a pot wired as a variable resister. Firstly, only ONE LED seems to light, and it remains lit at any level of any control on this amp, although particularly brighter with the 500k pot it is sent from turned LOW. The sound seems good but I don't notice much difference across the pot range really. Would a capacitor where the LED's tie together to ground help, and if so, what value? Other ideas I am considering are to place a capacitor in parallel with the diodes as I have seen in many schematics, or to use FOUR LED's with a rectifier diode as a bridge the way we see in JCM900 schematics... Please observe the schematic and video below, and thanks for any help in advance! Frank.