This complete sound system has everything you need sound-wise to put on a small concert. 4 channels, 150 watts with gain controls, tone controls, reverb and special effects controls, XLR input jacks, and 1/4" input jacks. Two speaker cabinets each with a 10" speaker and horn tweeter - pole mounts - handles. This set is an incredible value. I bought one just to have in case I show-up at a gig and they don't have sound.