DB series cabinets are now Bi-amp to maximize efficiency and provide a crystal clear highs and smooth chest pounding lows. The DB series offers 12” & 15” Passive, Active, Active with the added functionality of a USB/SD (DB12AUSB, DB15AUSB) media player and Active with USB/SD with Bluetooth (DB12AUSBT, DB15AUSBT)The DB’s Mp3 Module lets users play music and access sound files directly from an SD card or USB memory device. The device includes ID3 tag which allows users to see the file information that may include Artist, Song Title and/or Track Number. For added convenience the Mp3 controller boasts controls that allow for easy navigation of audio files stored on the USB flash drive and SD memory cards. The DB12P and DB15P passive models have a rear panel switch that allows users to choose between Full Range or Bi-amp. For added flexibility all active models have an 8 Ohm Bi-amp Parallel output connection to connect an additional passive DB cabinet.