ha ha .. my fren last time use home 5000watts Sony HI-FI in car put at booth .. he uses DC to AC converter bought from Pasar Road @ Jalan Pasar ;) ... its very powerfull ICE tat ever made ;) ... why spent RM10k for very gud ice? .. when u can puchase HI-FI sets ;)
Cheers!
P/S: make sure u have spare battery and if not only turn on while the car in IDLE mode ;) .. otherwise later cannot start ure car .. he he