This is a case for the readily available 2.1 100w 50w + 50w amplifier module which features : MP3 WAV FLAC playing from Memory stick : Aux Input via 3.5mm jack plug : Bluetooth : FM Radio modes : Remote control As well as the case, a few items are required : 5.5mm 2.1mm panel mount power socket 3 x speaker connectors 5.5mm 2.1mm power plug 3mm panel mount led 3.5mm Jack 15cm panel mount extension 15cm USB panel mount extension 3010 24v Fan Laptop power supply (20v is good) with 5.5mm 2.1mm barrel plug