A professional home theater setup includes:

1. Display/Screen
   The display could be a high-definition TV or a projector with a screen. It provides the video component of the home theater system, delivering clear, crisp visuals for movies, shows, and games.
2. Audio System
   This includes speakers and a subwoofer, which deliver surround sound. The audio system is essential for creating immersive, high-quality sound that matches the visuals for a cinema-like experience.
3. Receiver
   The receiver is the central hub of the system, connecting all components. It processes audio and video signals and directs them to the appropriate speakers or display. It also controls sound volume and source inputs.
4. Blu-ray/DVD Player/Streaming Device
   This component is responsible for playing physical media like DVDs or Blu-rays, or streaming content from online services. Many modern systems also integrate streaming devices for easy access to platforms like Netflix and Hulu.
5. Speakers
   A full home theater system will typically include a variety of speakers: front speakers (left, right, center), surround speakers, and a subwoofer. These work together to produce multi-dimensional sound.
6. Subwoofer
   The subwoofer enhances low-frequency sounds, such as bass, adding depth and power to the audio. It helps create a more dynamic and realistic sound experience.
7. Cables and Wires
   Cables connect all the components of the system, ensuring the audio and video signals are transmitted correctly. Quality cables ensure high performance and prevent signal loss.

Remote Control/Smartphone App
The remote control or mobile app is used to manage and control the entire system. It allows easy access to settings, volume control, and switching between devices.