A:AnswerYou will have to acquire a bluetooth range extender the same as you would for a weak wifi signal. You have said the link between your PC and the receiver drops. If both devices are stationary, there is something in your environment interfering with the signal, like another bluetooth device. An adequate signal should be obtainable within a 30-foot radius of the receiver
A:AnswerMay be too late to help you but yes to all questions. It is a standard receiver. You only have two sets of speaker hookups so you would have to set up speakers on one and the subwoofer on the other. Bluetooth and headphones can be used.
A:AnswerYes you can by wiring 1 set on A and the other speakers on B. You can also play hoth A and B at the same it if you want. I bi-wired mine running both channels at once.
A:AnswerProbably. I hook my stuff up and give it a try. If it sounds good, it's OK. Be careful about the subwoofer. There is no subwoofer connection for this receiver. I would opt for a receiver with a separate subwoofer output.
A:AnswerThe two items have price tags. Sound quality is important, size of the space is very important. The component needs a low filter circuit, speakers and turn table is about what you can afford.