amplifier wireless microphone speaker Reader, u-disk format: MP3,FM High quality RCA input/output socket with level meter AV 600 home amplifierHigh quality RCA input/output socket ,two way Mic input,Professional Digital OKReader, u-disk format: MP3,FMTreble,Bass,Volume control ,mic echo controlTechnical parameter Total harmonic distortion0.4%S/N75dB,lFrequency Response2918KHzdistortion0.1(1KHz) ...
