About 2 years old, in great condition. Retails for $699 EACH, selling for $400 each. Pick up only. Description: Power your passive speakers, create your dream smart home, and enjoy endless possibilities for multiroom listening. Bring the Sonos experience to your floor-standing, architectural, outdoor, or bookshelf speakers, and connect your TV or turntable. Stream music, radio, audiobooks, and more from all your favorite services, and enjoy easy control with the Sonos app, Apple AirPlay 2, a universal remote or keypad, and your voice with a compatible device. Add Sonos speakers around your home for a more immersive experience. Everything works together over WiFi. Amp packs 125 watts per channel, so you can easily power outdoor speakers and listen at higher volumes with clear, undistorted sound. Connect everything from your passive speakers and TV to CD player and turntable, then add Sonos speakers around your home for multiroom listening. Enjoy stereo sound for shows, movies, and video games when you connect Amp to your speakers and TV. Then wirelessly add a pair of Sonos surrounds for even more immersive entertainment. The rack-mountable design features an advanced heatsink for optimized airflow and heat management.