INTRODUCTION OPERATION Thank you for your purchase of the ROLLS RDB109 SOUND CENTER. The RDB109 is an audio distribution device with a single balanced XLR line-level input, distributed via transformer isolation to ten balanced XLR outputs. NOTE: This manual assumes the user has a basic working knowledge of the proper connection and operation of professional audio equipment. Connect the input source to the INPUT of the RDB109. This may be a line level or consumer level signal.