Krown High power stereo amplifier for 4 speakers. Separate left and right channel controls with double bass, treble and volume knobs. It can easily fulfill audio needs of even large rooms. This amplifier is ideal to drive high power bookshelf or floor-standing speakers, etc. A front USB port allows easy connectivity for Pen drives, memory cards. Two RCA connections can be used to connect TV, DVD players etc. Can drive 4 speakers (2 left + 2 right). Can be used to listen to MP3s via USB input. Inbuilt Bluetooth to connect to mobile devices in a wireless way. RCA Line out to connect other amplifiers.