used this easy mp3 fm modulator last year, yup easily one of the stupidest product ever.

the frequencies are to near to each other and thanks to our already cluttered airwave, u get free remix in few areas. sound quality? bad. when it reaches the last song in your usb drive, it'll stop...u have to unplug and plug in and start all over again. the songs also have to be arranged carefully during transfer from pc to usb drive, and of course, remember which track is your favourite song.

pros; cheap, no need wiring, transferable to other vehicle, gather 10 cars near each other, tune to the same frequency and all the cars enjoy the same song with only 1 unit.

with or without amp, the hissing noise will still be heard. the frequencies available are so near to each other and might even be the same with off-air radio available in malaysia! Most of the time I have to bring down the car antenna to enjoy it.

anyway, gave it to my mom, bought a cheap cd player and love it ever since!