Polk Audio Signa S4 vs XGIMI Horizon Ultra

The Polk Audio Signa S4 delivers immersive, cinematic sound to your living room through advanced Dolby Atmos technology and an included wireless subwoofer. Designed to seamlessly integrate with modern 4K and 8K TVs, it transforms everyday television viewing, movie nights, and music listening into a true surround sound experience. Featuring Polk's patented Voice Adjust technology, the sound bar ensures crystal-clear dialogue so you never miss a word. Setup is effortless with the included HDMI eARC and optical cables, allowing you to control the volume using your existing TV remote while enjoying robust, room-filling bass from the down-firing subwoofer.

The XGIMI Horizon Ultra combines two laser light sources to deliver true 4K resolution with vibrant colors and deep contrast. Dolby Vision support ensures every frame is rendered with HDR precision, turning any room into a personal theater. Designed for easy setup, it offers auto-keystone correction, built-in speakers, and wireless streaming, making it a plug-and-play solution for movies, games, and presentations.

• Immersive Dolby Atmos height effects
• Included wireless subwoofer for deep bass
• Voice Adjust technology for clear dialogue
• Simple setup with HDMI eARC and optical cables

• True 4K resolution with laser brightness
• Dolby Vision HDR for vivid colors
• Wireless casting via Wi-Fi 6
• Built-in high-quality speakers

• Lacks built-in smart assistant integration
• No Wi-Fi streaming support built-in
• Limited physical audio inputs beyond HDMI and optical

• Premium price point
• Limited to indoor ambient light conditions for optimal HDR
• No battery-operated mode