DFA has been designing and installing audio and voice reinforcement systems for commercial applications for over 22 years. It all started when Don Fillers took his experience in touring sound and applied it to installed audio systems for Dollywood (read the whole story here).

“Working with DFA on the design and installation for the Audio and Video systems for our new building, The Barn, has been a pleasure. The systems have exceeded our expectations in terms of performance and ease of use.”

Matt Wilcoxen, Blackberry Farm

Over time, commercial applications grew to include the most varied uses of any particular client with which DFA works. You have probably heard and seen our systems in retail and restaurant applications, meeting facilities, museums, professional audio venues and professional music venues. You might have already used our systems in boardrooms and education applications. Below is a partial list of our completed projects

“Customer service is what its all about and you guys (DFA) take care of our clients every time”

Barry Brooke, Executive Vice President, Lawler-Wood

Retail and Restaurant

  • Kohl's
  • Hollister
  • Panera Bread
  • Chili’s
  • Calhoun’s


  • LaGrange College
  • Campbellsville University
  • Austin East Magnet School
  • Beaumont Magnet School
  • Indian Springs Performing Arts Center

Meeting Facilities

  • Council Chambers, Maryville, Tennessee
  • Pollard Technology Center
  • Knoxville Convention Center
  • Main Assembly Room in City/County Building


  • Knoxville Community Development Corporation
  • BankEast
  • SunCoke Energy


  • Women's Basketball Hall of Fame
  • Green McAdoo Cultural Center
  • East Tennessee Historical Center
  • Sunsphere Observation Deck

Professional Audio/Music Venues

  • Tennessee Smokies Ballpark
  • Neyland Stadium
  • Dream Makers’ Theater
  • University of Tennessee Music Hall