If you want audio in, you have to be in on my secret that everyone is unaware of because they are a bunch of hobknockers.
You simply buy one of these puppies https://www.youtube.com/watch?v=q6cW8XuEBB0, and place it inside the case of the nes. you then take the input and output of the pedal and add wire to make them fit to the edge of the nes. You then drill the holes in the nes where you want your 8 bit audio in / out and place them accordingly. Solder up. You then take the switch out as well as the pots and dill holes for them on the top. You then have an NES with 8-bit audio in.
this upgrade even works for NES's that no longer power on, so it is a win'win upgrade that is a lot cheaper than the MIDI stuff I mentioned before.
Last edited by dsv101 (Jul 3, 2014 3:55 pm)