thecarpathian asks the most important question. At that budget, using vinyl as your source is going to really limit your other components. Streaming could be an inexpensive source initially allowing you to put more in speakers and amplification. Also, are you willing to buy used or do any DIYing? How big is the room And how visible can the equipment be are other considerations once you start attempting to determine which components to purchase.
To start answering your original question, you need a source, amplification, and speakers, as well as cables to connect.
To start answering your original question, you need a source, amplification, and speakers, as well as cables to connect.