Edifier R1580MB - 2.0 Lifestyle Active Bookshelf Bluetooth Studio Speakers /BT4.0/AUX/Bass/Dual Microphone Input for Social Events and Meetings (LS)

Edifier R1580MB - 2.0 Lifestyle Active Bookshelf Bluetooth Studio Speakers /BT4.0/AUX/Bass/Dual Microphone Input for Social Events and Meetings Dual microphone inputs for use as public address system Class D amplifier with 4inch bass drivers and 13mm silk dome tweeters 100% MDF wooden enclosure to minimise acoustic resonance POWER OUTPUT:R/L: 21W + 21W RMS NOISE LEVEL:25dB(A) MICROPHONE DYNAMIC RANGE:-50~30dBV INPUT SENSITIVITY:PC:700±50mV AUX:550±50mV Bluetooth:550±50mFFS; FREQUENCY RESPONSE:55Hz-20KHz; MIDRANGE BASS UNIT:4" (116??); TREBLE UNIT:1?2 inch (13mm) INPUT TYPE:1/4”, AUX, RCA, Bluetooth v4.0(A2DP ? AVRCP ????????);