Rainbow Audio Components (RAC) is a designer and manufacturer of high performance audio systems for the mobile market. Founded in 1984 by Paul Jelko, RAC has been pushing the limits of audio design and engineering for over two decades.  Since the beginning, RAC has been winning performance, design and sound awards worldwide with its innovative designs, handcrafted manufacturing, and distinct sound. RAC has a strong devotion to research and development, spending nearly fifty percent of its resources on R&D.

"Imagination is to create something that did not exist before..." (Paul Jelko, Research & Development, RAC GmbH & Co. KG)

Sinfoni was established in 1997 from the partnership between professionals of the high fidelity market and electronic experts with a common passion for music.  Their goal was to introduce a new brand to the car hi-fi market that would be able to express their concept of musicality and quality.  From a simple idea, a complete line of products has been realized now that, year after year, audiophiles worldwide have learned to understand and appreciate.  Sinfoni products are completely produced by hand and, with the utmost pride, completely made in Italy.