The Stage 1 Audio Upgrade delivers striking clarity and definition, more musical detail and life, and improved bass dynamics simply and affordably.

When we designed our Stage 1 Audio Upgrade, we made sure the system met several key requirements and features:

100% Stealth Your interior will appear unchanged, and only you and your passengers will know you've upgraded your audio system.	Greatly improved musical detail & presence Uses coated natural fiber drivers and silk tweeters that remain distortion free at higher volumes and provides accurate, natural sound.
Plug n'Play! Features plug and play connectors on each speaker, so all you have to do is remove your original speakers then mount and plug the new ones in.	More highs, more lows Produces higher quality sound and a wider range of the bass and treble you're currently missing. (For more bass response, we recommend a BSW subwoofer system).
Engineered for your BMW It's direct fit speaker replacement -- and each speaker's efficiency and impedance are tuned for perfect harmony with the factory amplifier and head unit.	Reasonable cost, incredible results Truly enjoy your BMW's stereo without breaking the bank. Even though it's affordable, the Stage one provides real, significant improvements in sound quality.
100% Complete Package Replaces every speaker in the car and includes everything you need except basic tools. All you have to do is buy, install, and enjoy.	Do-It-Yourself Installation Includes step-by-step instructions with photos. An afternoon with your BMW and basic tools is all you'll need.
Performance Guaranteed Unconditionally guaranteed to exceed all your expectations or your money back. No catches, no restocking fees, no funny stuff: you get 30 days to try our products, and if you're not totally happy, send them back for a refund. Click here for more details.

How and Why the Stage 1 Audio Upgrade Works

The BSW Stage 1 Audio Upgrade was designed for you if you want to enhance and improve your BMW's sound system simply, effectively, and affordably - all through the simple replacement of your factory speakers with BSW's meticulously engineered, vehicle specific speakers.

By carefully designing not only the highest quality speakers, but also very efficient speakers, we replace the weakest link in your vehicle's audio system, the speakers, without necessitating amplifier or head unit replacement. As a result, you get the biggest possible improvement in your BMW's audio system for the least amount of money, time, and effort.