The 2.1 Sonos Amp Speaker System consists of a Sonos brand home theater speaker system with a 2.1 channel system configuration. The set includes PSB 800s speakers and a 400 watt Acoustic Research Subwoofer, all in a sleek black color. This system offers various connectivity options such as wireless, Bluetooth, wired, USB, and HDMI, providing versatility for different audio sources and setups. Perfect for enhancing your home audio experience with high-quality sound and seamless connectivity options. 2023 Sonos – Amp 250W 2.1-Ch Amplifier. 400 Watt Acoustic Research Sub (ARS112PA). All in great condition, you will never find a soundbar with this level of sound.