All the audio stuff was stuff i had laying around, i didnt want to use a car headunit since am/fm stations in illinois suck beyond buzz lightyears to infinity and beyond motto. Its a 40W set up using a re-purposed AV amplifier powered by a converted pc powersupply. It gets pretty loud enough to hear bass over the CNCs i plan on upgrading the amplifier in the future to a higher output and adding some usb chargers.