Mackie SRM1501.0, pair, Active PA Speakers, Complete PA System, Portable PA, 5.25Â inches, Analogue stereo inputs (RCA), Balanced input (analogue) XLR, Balanced output (analogue) XLR, Telephone Input, Black, 173Â mm, 203Â mm, 3.4Â kg, 284Â mm, Built-in amplifier, speakers, 17500Â Hz, 100Â Hz, 150Â W, 120Â dB