The underside of the unit has some tape residue. Please see pic. Otherwise it’s in excellent condition and fully operational.

The Audioengine B1 Bluetooth Music Receiver is a sleek and powerful device designed for home audio systems. With its silver color and compact size, it seamlessly blends into any stereo setup. This Bluetooth receiver offers two channels for stereo sound and features both analog and digital audio outputs, including stereo RCA and digital optical TOSLINK. Made by Audioengine, a trusted brand in audio electronics, the B1 is a high-quality unit that provides a seamless and enjoyable listening experience for music enthusiasts.