Bo designed a sound system for my families newly constructed house. A brief description is that I have six zones that has four options of devices to play the music. The speakers that he recommended sound amazing and I am amazed at the sound quality and all the options of music that I have. During the last two visits to my house to work on installing the system he presented invoices that I gladly payed due to the outstanding system he had installed. Approximately one week later he called and told me that he had been looking at the invoices and he had overcharged me $500 and would send me a refund check. I would have never known of this overcharge if he had not told me. The world needs more people like Bo Vandall.