Used, works like new. Reset to factory settings. Comes with power cord. Needs Sonos S1 app. The Sonos Connect Amp 1st Gen is a versatile audio device that offers high-quality sound and connectivity options. With support for AAC media format and Dolby Digital/Dolby Surround sound formats, this unit delivers immersive audio experiences. Its sleek gray design and compact size make it easy to integrate into any home audio setup. Featuring a single-core processor and 32 MB storage capacity, this device ensures seamless performance and streaming capabilities. With Wi-Fi and Ethernet connectivity, the Sonos Connect Amp 1st Gen allows for easy access to your favorite music and audio content, making it a convenient and stylish addition to your home entertainment system.