The ES-217 & ES-218 (1x4) and the ES-245 & ES-246 (Quad 1x6) are Audio Distribution Amplifiers that accept a balanced or unbalanced audio signal and produce exact copies of that signal. The outputs are isolated and have recessed Gain controls. These units are the “Audio Counterparts” of the Video DA’s (ES-207A and ES-247E respectively) shown on page 6. All inputs and outputs are accessible on terminal blocks for simple “permanent” installations. Or, if option “XLR” is specified, all inputs and outputs are available on XLR connectors for easy disconnect/reconnect.