Not wanting to spend a ton of cash on a e call I decided to build my own. 250watt pile amp, 8" 65watt pile horn, 12v lead acid battery, rf remote for the iphone and mp3s off the net. It works good ill do some field tests later this week. Plays loud and clean even at high volume. its a bit rough as first prototypes are prone to be. v2.o will correct that