The Onkyo HT-R580 is a home theater receiver that offers high-quality audio and video performance. Some key features of this receiver include:1. 4K Ultra HD passthrough: This allows you to connect your 4K Ultra HD TV or projector directly to the receiver, and pass the 4K signal through to your display without any loss of quality.2. Built-in Bluetooth: This lets you stream music wirelessly from your smartphone, tablet, or computer to your home theater system.3. Zone 2 audio output: This feature allows you to send audio to a second room in your home, such as a bedroom or den, while still enjoying audio in the main room.4. HDMI CEC compatibility: CEC (Consumer Electronics Control) allows for easier operation of multiple devices connected via HDMI. With CEC, you can control multiple devices connected to the receiver with just one remote control.5. High-current power amplifier: The Onkyo HT-R580 features a high-current power amplifier that delivers deep, powerful bass and clear, detailed sound.6. CHIRP (Channel High Current Impact drive) power technology: This exclusive technology helps to bring an extra realistic feel to the dialogue and music by ensuring each speaker has sufficient electrical power. The higher electrical current ensures that your dialogue and music are accurately rendered and immerse the listener in the moment.Overall, the Onkyo HT-R580 home theater receiver is a great choice for anyone looking for high-quality audio and video performance and a range of convenient features.