The list, which is in its tenth year, reported a leap in average income of 9 percent, from $6.8 million to $7.4 million. Other strong data includes a leap in the average installation price of 7 percent.

The revenue data bucks the one-year drop in overall volume that was reported last year, when the group cumulatively reported a 3-percent decline in revenues.

It also continues a three-year trend of increasing revenues-per-installation (a trend started back in 2005).

Over its 10 years, the prestigious list has changed from a list that used to include only traditional audio/video companies to a mixture of companies with roots in everything from audio/video and hybrid retail to automation and structured wiring, from security to high-voltage electrical and HVAC.

The top of the list itself reflects that diversity.

This year’s list is led by Pittsburgh-based Guardian Home Technologies with $37 million in multi-subsystem home technology revenue out of 19 locations. The company, overall, is a $120 million security company with roots in both residential and commercial alarm systems.

The No. 2 company is Houston-based Modia (formerly Home Theater Store), a regional hybrid retailer with 11 stores. And the No. 3 company is Audio Command Systems, a traditional high-end custom installation company with strong ties to the architectural community in the New York City area.