Retail price: $399.99Open box Monolith by Monoprice MM-5 powered multimedia speakers (pair, black). Bluetooth 5 with Qualcomm aptX HD. Inputs: optical, USB DAC, RCA, 3.5mm. Headphone and subwoofer outputs. 5.25in woofers and 1in silk-dome tweeters, with dual Class AB amps (2x65W woofer, 2x35W tweeter). 42Hz-20kHz. USB charging port and remote. Open box item.