DMA250U Digital Mixer Amplifier is a multi-functional mixer amplifier integrated with the functions of USB flash disk, FM, Bluetooth. DMA250U support 70V/100V and 4-16Ω speaker output. With 3 Mic, 2 AUX, 2 EMC for audio input. With various functions, including clear screen display of status, EMC IN, MIC IN with phantom power, priority of inputs, user-friendly and easy to use. The device can meet the requirements of the users and can be widely used.