In addition to the Bluetooth input, there is a 3.5mm mini-jack wired input that provides physical connection to older devices. Also, a 5 VDC adapter is included.
The MV-BT Bluetooth Input Module from Kali Audio is a two-channel Bluetooth receiver with two balanced XLR and 1/4" TRS outputs for use with professional sound systems. It can be used to pair any Bluetooth-capable playback device such as a smartphone or a laptop (sold separately) to stream audio and integrate directly to speakers, mixers or an audio interface for CD-quality sound reproduction.
The MV-BT features an independent volume control that eliminates the need to control volume from the playback device. This puts the large, easy-to-use volume control at your fingertips and ensures that the Bluetooth-capable playback device can send audio at the highest possible resolution. LED indicators alongside the volume wheel display the volume level.