No car manufactures make their own car audio, so if it isnt bose, its not mazda either. Panasonic, Pioneer, and Clarion make a lot of OEM stuff. Even some non-bose branded units are made by bose, but let the bose name fool you. It doesnt carry a lot (if any) weight in the REAL audio world. People who think Bose is the best audio company out there are victims of excellent marketing or the wife factor, i.e. Those speakers are so small and cute and would fit will into our decor...