Itrip Transmitter Is There Any Way To Increase My ITrip Auto FM Transmitter's Output Volume?

Is there any way to increase my iTrip auto FM transmitter's output volume? - itrip transmitter

I have the iTrip FM transmitter that connects through the port for my iPod Touch. The problem is that during the transmission of audio for the car, the production volume is significantly smaller than the volume of regular radio programs. When I crank my car stereo volume to hear background noise. Is there any way to the output without having to increase the volume of cars?