The PDV series is a range of fully featured, high power mixer amplifiers with 4 zone outputs, each with separate 6-step volume controls. This series amplifiers features an integral MP3 module with USB and SD Card slot, a FM tuner and internal BT receiver. Mic 1 channel has an override over all inputs and MP3 player. 24V contacts can be connected to a fire alarm panel for emergency evacuation if required. All models are designed with complete protection from overload to avoid any damage. This series of amplifiers is suitable for applications in a bank, town hall, supermarket, school, hotel, restaurant, shopping centre or any other public space. PA amplifier with 4 zones, independently selectable and volume controlled Integral media player with FM Tuner, USB and SD slot  BT receiver for audio streaming Overload protection Chime and Fire alarm over all channels Zone volume control over 6 steps Bass/Treble control 3x mic inputs and 3x line inputs Telephone paging Bass and treble controls 19" Mounting with the brackets possible (2U) Emergency operation by 24V battery (not supplied)