The Gemini GSYS series has a fresh look! Introducing a sleek new modern design to our legendary homestereo systems that deliver the earth-shaking yet clear sound that you expect from Gemini. With theGSYS-4800, enjoy assorted onboard audio playback options or connect virtually any audio source viaauxiliary input. Bluetooth® audio streaming plays all your favorite songs wirelessly or play your musiccollection from the USB and SD card inputs or connect virtually any audio device directly into the 1/8"aux input.