I wanted to build a VERY simple amp that takes the music from the headphone plug and output it to 1W 8ohm speakers. Oh and i was planning on powering it with a 9v battery. I am to poor to buy any kind of IC so thats out of the question too.
Note: this is just a little something i am doing to wrap my mind around this for my main project
either:
1. a serial controled amp/synth controlled by a Game boy advance(had a spare one) with a home made rom
2. Or put an amp and a bunch of speakers in my backpack or something. Still thinking of a power supply but i was thinking of a home made one from the 6, 18v drill batteries I have but how would i charge them XD