Sony MHC-EC55 Mini Hi-Fi Component System (Discontinued by Manufacturer) Digital AM/FM stereo tuner 2-way bass reflex system with DSGX bass boost function 3-disc CD changer with CD-R/RW MP3 playback 130 Watts of total power 6.5" subwoofer 130 Watts of total power 3-disc CD changer with CD-R/RW MP3 playback 6.5" subwoofer 2-way bass reflex system with DSGX bass boost function Digital AM/FM stereo tuner