Get tomorrow's features today with original Dynamic Audio Amplification in the feature-packed TX-NR555 Network A/V Receiver. This smart hub supports Dolby Atmos and DTS:X enhanced with Accu Reflex phase-calibration technology for crystal-clear object-based sound, and also includes the latest HDMI spec for 4K video. Stream from app to theater via Google Cast, Wi-Fi, or AirPlay and let the 32-bit DAC work its magic on everything from MP3s to 192/24 Hi-Res Audio. But most importantly, big movie sound is amazing thanks to discrete high-current amps that drive speakers effortlessly. So sit back and enjoy the best next-generation entertainment has to offer. The Polk Audio TSi400 floorstanding speaker is the midrange tower speaker in the TSi series with three 5.25-inch woofers resulting in higher power handling and more bass capacity. It's great for high impact movies and music. Its affordable price and small footprint means they can be used as the front channels in a home theater system or as the main speakers in a music system.

• (1) Onkyo TX-NR555 7.2-Ch Network AV Receiver
• (1) Pair of Polk Audio TSi 400 Floorstanding Loudspeakers
• (1) Polk Audio CS10 Center Channel Speaker
• (1) Polk Audio PSW110 10-Inch Powered Subwoofer

(1) Onkyo TX-NR555 7.2-Ch Network AV ReceiverOnkyo