A:AnswerYes, this will affect the power given to each speaker. But it will depend on how big ( power draw ), the speakers are as to whether it would be harmful or not.
A:AnswerThat will depend on the broadcast power of your bluetooth device. I'm getting about 20 feet with a HOTT compact CD player. ( minimal broadcast wattage )
A:AnswerYou can connect a pair of 8-ohm speakers to the A terminals and a pair of 8-ohm speakers to the B terminals. You can play the A pair or the B pair or both.
A:AnswerTo be honest Im not sure but I doubt it . I had no luck getting my unit to connect to bluetooth with my iphone SE. I did however use a 3.5 mm RCA cable to connect my phone and other devices to the stereo for music .Which works well and is said to provide better sound. Some people claim the bluetooth range is poor and is frustrating so beware . This is a decent unit for the money and gets fairly good reception with the provided simple antennas . Im happy with my unit .