If you need a sound masking solution you should call Erika Mumm at 1 (866) 557-8438. I have never seen a better solution for sound masking than Speech Privacy Systems! Quick to install, easy to control and easy to operate!! I have installed no less than 20 of these systems and all on them hit their mark and satisfied the customers noise/privacy issues. Erika Mumm is the most responsive, knowledgeable and professional sound masking rep I have ever dealt with. She not only knows the technical installation side but also the software side that makes the system works so well. Great folks to work with!