I tried a cheap Best Buy blue tooth transmitter for a basic single signal it worked but not well. I went with a sena 20 and a freewire. I am very pleased with it. You can use both sides of your aux imput, am, fm, phone, gps on phone, i also have a zumo, satelite radio, plus wireless intercom with my wife on her bike. Yes a sena system cost a little more but it is best thing i have ever had a bike.