Hi, So I am about to buy some speakers and a receiver and have recently learned about bi-amplifiers. Well to be short. Questions: 1. Is there a difference if a speakers is bi-amplied or not (meaning connecting the 1 wire instead of two). 2. I don't see many types of receiver that can do bi-amplifying except one of the high end Yamaha receiver (but it is not true bi-amp). 3. Should I bi-amplify my speakers? If yes, do people usually bi-amplify the center or the front two speakers? Thanks.