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I didn't show the Jfet preamp that is correct and feeds this LM386 amplifier and feeds the cable to your power amplifier.Wow, that's a lot less complex than what i posted.
What are you talking about? Pin 7 uses a filter capacitor to ground when the power supply has hum.Pin 7 - would the resistor for the LED lead to the input to the amp, or could this be a standalone contraption?
The output of the Jfet preamp circuit feeds the cable to your power amplifier and feeds the input of this LED driver amplifier.
What is a "split signal"? The output of the preamp simply feeds both items.So it would be a split signal?
One 9V battery can power hundreds of things. But if it powers both the preamp and the LED driver then the high current of the LED driver might cause the battery to go dead soon then the preamp won't work any more. Maybe having a separate battery for the preamp is best so that when the battery for the LEDs goes dead then the guitar still plays with its own battery for the preamp.The video that was posted, it seems as if his device is built into his guitar. if i were to take what you said, then it seems things would go like the attatchment...
If so, one would need two +V sources?