You would plug your turntable with built-in preamp into your receiver via an RCA cable. Your receiver would then be plugged into 2 or more speakers. This setup allows you to easily plug into an existing speaker setup that may be multi-purpose such as home theater watching or wireless music streaming.

Do you need a receiver for a turntable?

In order to connect various video and audio components to a speaker you generally need a receiver. It has inputs for the different components and an output for the speakers. The receiver allows you to connect your turntable, record player, CD player, TV, etc.