Built-in Bluetooth receiver
Internal USB player and FM tuner
Switchable +20V phantom power
24V emergency mute contacts
The Adastra A4 4 Channel Stereo Amplifier is a great choice for small Cafes, Offices, Restaurants & shops looking to install a background music sound system or foreground system.
SA180 Secure Wall Mixer-Amplifier with Media Player & UHF Mic