SPB25BU/TW   BI-AMPLIFIER module for speaker box SB250BU with Media Player – MP3 player, USB/SD input and BLUETOOTH – TWS function for connecting two speakers – Remote control and power cord included -Power: 180 W RMS ( 4 Ohm ) – Crossover frequency: 2000Hz – Recess dimensions: 30 x 12 mm – Weight: 2kg   Read more SPB25BU/TW   BI-AMPLIFIER module for speaker box SB250BU with Media Player – MP3 player, USB/SD input and BLUETOOTH – TWS function for connecting two speakers – Remote control and power cord included -Power: 180 W RMS ( 4 Ohm ) – Crossover frequency: 2000Hz – Recess dimensions: 30 x 12 mm – Weight: 2kg