The MD-200STU, a 1U 19” rack size all-in-one player, is capable of playing various audio sources, such as USB, SD/MMC Card and FM Radio. In USB mode, USB or SD/MMC Card can be selected to play the audio source, while Tuner mode plays FM Radio. The FM radio tuner is able to store up to 30 channels in preset memory. Sleep function of up to 90min is available in Tuner mode.