I've been working with pr8 lately and it's really fun but I want to build a circuit inside my NES that preferably can be powered off the NES' voltage regulator. I'm looking for something that I can take the signal from the rca out solder points (not directly off the 2a03), has volume potentiometer, and outputs to an 1/8" or 1/4" jack.
I've googled and have seen plenty of diy schematics but am wondering anyone's exp in preference on any builds you have done for something similar. It has to boost the audio out though b/c I want to be able to turn it up fairly loud gosh darn it.
I also don't want to do anything external other than drilling a hole for the potentiometer and headphone jack.