Sonos Long Straight Power Cable for Five, Beam, and Amp Black PCBMLUS1BLK - Best Buy
Amazon.com: Vebner 3-Foot Power Cord Compatible with Sonos Five, Sonos Play 5, Sonos Beam, Sonos Arc, Sonos Amp, Sonos Playbase, Sonos Sub Gen 3 and Sonos Sub Mini - Black : Electronics
SONOS User Guide | Amp
Sonos Amp 250W Stereo Power Amplifier (Black) AMPG1US1BLK B&H