Ukulele Amps and PAs: The Best Way to Electrify Your Uke
Number of cables to plug in: 6 – mixer power, amp power, signal from board to amp (x2), power from amp to passive speaker (x2). Amp/PA Controls. Most amp or mixer controls will be organized by channels. A channel is a set of controls that can accept the signal from a single source (or possibly two if the channel is "stereo").