Power Requirements: DC 12V 2A, Power Output: 25W(RMS)@10% THD, Total Max Power Output: 50W, Frequency Response: 75-20k, Bluetooth Version: 5.0, Compatible Bluetooth Profiles: A2DP. Custom designed in Melbourne, the X4 produces over 100dB SPL of immersive sound and powerful psycho-acoustic bass you can feel, delivering deep rich lows that rock the room, paired with a highly dynamic sound range for the most intensive party speaker of its size.