The renkforce e sa9m mini amplifier can be put to many different uses whether as the centre of your home entertainment system as a second amplifier or simply in your guest room the e sa9m sounds as good as it looks this stylish mini amplifier with wooden look sides has auxiliary inputs for radios cd and cassette players mp3 players laptops and computers as well as a usb port and an sdmmc card slot meaning your favourite music sounds great whatever its format separate bass and treble