1. Built-in MP3 player,DVD player and Tuner. 5 speaker selector zones, MIC 1 with priority over other inputs, 1 AUX input and Pre-amplifier control. Only connect to the loudspeaker can do public address system function. 2. 4 inches LCE display screen, Chinese and English optional. 3. Program auto controlled function. To perform auto play in fixed time,fixed location and fixed music. Each day Max.80 steps program. 4. Built-in MP3 player, the storage can be expansion. Support 100 songs capacity, select songs by manual operation on the machine or by remote controller. 5. Built-in FM/AM Tuner, each for 50 channels storage. With manual input frequency and save the channels number, automatic or manual searching functions. 6. Built-in 5 speaker selector zones, with audio output for connecting to the power amplifier. 7. MIC 1 with priority over other inputs, 1 AUX input. 8. Rated power 60W,120W,250W,350W is available. Model MT-60 MT-120 MT-250 MT-350 Rated output power 60W 120W 250W 350W Power Consumption 160W 220W 350W 450W Sensitivity -1V 0dBV S/N 105dB Frequency Response 80Hz--15KHz ?.5dB AM Channel 522-1611 FM Channel 87-108 THD <0.6% Indicator Power, Signal, leak, protect, overload Power Supply ~220V/?0%50Hz Dimension 484X420X132 mm