Your browser does not support JavaScript! Welcome to 3rd Millennium!

Great Miata Sound!

3rd Millennium offers high performance audio solutions for your 1990-2015 Miata - all at affordable prices. And all our solutions are plug-and-play. No drilling or modifying your Miata, no splicing wires, and no special skills are needed for an installation.

Learn More

Headrest Retrofit Kit

Just because your 90-97 Miata didn't come with headrest speakers doesn't mean you can't have them. Our Retrofit Kit is 100% oem compatible - that means a perfect fit and no cutting or modification to your seats.

Read More


Frustrated that you haven't found affordable premium door speakers for your Miata? The frustration is over. Introducing the M600 and M800 door speakers for the 1990-2015 Miata. Exact oem fit with deep, rich bass. It's a HUGE sound improvement.


What's New

Our goal is simple. We want to provide hard-to-find and high quality audio and electronics products for our customers - all at a great price and with fast & courteous service.

Glenn - President & CEO

What's New at 3rd MillenniumOct. 17: New videos! We've got 3 new videos on our YouTube channel; Installing our new Retrofit Kit Special Edition into an LE/SE model, Tweeters in the Miata SE/LE Door Cards, and How to Make a Perfect Solder Connection Every Time. Check them out at 

New item! Restoring your NA/NB door wiring? We now have the correct speaker harness plug connector available. Exact OEM match!

And our new Air Horn Kit is now shipping! Same price as the old Stebel kit but now with the much better quality and horn made by Marco of Italy.

If you already have one of the compact Nautilus horns you picked up somewhere else, we are making our high-quality mounting kit available for you as a separate item. See our Stebel Installation Kit as a standalone item.

Just replacing the existing headrest speakers? We have another video that covers the simple installation of our Millennium-5 speakers. Watch on our site here or on our YouTube channel.

See how easy it is to install our products in your Miata!  Check out our YouTube channel at