The Onkyo HT-R558 is a versatile and feature-packed AV receiver, designed to deliver immersive home theater experiences. It supports up to 7.2 channels of audio, making it an excellent choice for larger surround sound systems. One of the standout features of the HT-R558 is its compatibility with a wide range of audio and video formats. It supports 4K/60Hz ultra HD video, HDR (High Dynamic Range) and Dolby Vision, making it a great choice for those who want the best possible picture quality. Music enthusiasts will appreciate the receiver's audio performance, which is equipped with advanced DSP technology and high-quality audio components. The HT-R558 also features a phono input for connecting a turntable, an essential feature for vinyl enthusiasts. The receiver allows for plenty of connectivity options, with seven HDMI inputs, four of which are HDCP 2.2 compatible, as well as a variety of digital and analog input/output options. Additionally, the HT-R558 supports Bluetooth and Wi-Fi connectivity, making it easy to stream audio wirelessly from smartphones and other compatible devices.The HT-R558 comes with an intuitive on-screen display for easy setup and operation, and the receiver also works well with voice-controlled devices like Amazon Echo and Google Assistant. Overall, the Onkyo HT-R558 is a well-rounded AV receiver that delivers exceptional audio and video performance, makes use of advanced technology, and is flexible enough to meet the needs of a wide range of users. It's an excellent choice for home entertainment enthusiasts who want the highest possible performance at an affordable price point.