This little transmitter is quite powerful, I don't live in a huge metro area but there are plenty of stations around and this will "step on" them. Of course it won't completely overpower most of them, it does take a decently strong station to "step on" this transmitter. The sound quality is good, I'd liken it to a good tape deck. I've used the Belkin products before and this is much better, the Belkins on an open station were weak at best. This transmitter is even stronger than my Sirius receiver's transmitter. If you have no option but to use an FM transmitter this is a good one to go with, especially given the low price.