--LED indicator, --4 line/2 phone /1 Mic; --Input select; --Master and REC output; Features:LED indicator4Line/2Phono/1MicInput selectMaster and REC outputOutput level indicator in 2*10LEDSystem power supply:115VAC or 230VAC,50-60HzINPUTLEVELMIC:1.5mV/2Kohm balancedPhono:3mV/47KohmLine:150mV/27ohmOUTPUT LEVELMain:0dB/1V,600ohmRecord:0dB/1v,600ohmFactory Picture: