About Us

RTZ Professional Audio began in the mid 90’s developing upgrade electronics for Ampex MM1200 and AG440 machines. The business was created by Bob Starr doing design, PCB layout and CAD work. Rick Chinn, formerly with Mackie, Symetrix and others, quietly worked in the background helping with the engineering and design work.

The initial products were new reproduce and record cards for the AG440 machines. Later these were tweaked for use in the MM1200 multitrack machines. These cards were highly prized for their improved audio response and sound – most are still in use today. Today we still build complete transport control and locator systems for the MM1200 by special order. 

Next we began designing and building our first Neve style microphone preamplifier – the 9762 Dual Combo. The 9762 was our first production unit and was highly acclaimed, with a more open sound, by many. The success of the 9762 allowed us to grow our customer base with units across the US and abroad. Initially these were sold through Atlanta Pro Audio for a few years, and then other select dealers. As time went on, we moved into the 500 Series space which allowed us to produce high quality preamp and equalizer modules at a lower price point.

In recent years we’ve made the move to sell direct in an effort to remove the middleman costs. Direct sales allows us to bypass the middleman and sell high-end boutique products directly to studio professionals at a lower price point.

Thank you for your interest in our gear and thanks for visiting our web site!



Bob worked on various commercial hardware teams developing automated test equipment and telecom software right out of college. He worked in the trenches doing firmware and software development for many years, while working closely with R&D hardware teams. A friends family owned a recording studio during his early junior high school years and this spurred a love of audio and tape recorders.



Rick has a long history in the audio business. Rick worked with Mackie in the early startup days and designed one of their first four bus live mixers. With a strong background in radio electronics from the military, Rick came prepared with a passion for audio, tube, and tape recorders from the analog era. Rick’s design talents and engineering skills have touched all RTZ products from the very beginning.