Since your music doesn't have to compete with as much ambient noise, you'll hear subtle musical detail you hadn't heard before. Even if you have your stereo turned off, you'll appreciate the difference Original Dynamat makes. The more Dynamat you install, the more your car will sound and feel like a luxury automobile. If you use a cellular phone while driving, you'll hear your calls much better. If you are a car audio fanatic who likes your music LOUD, consider Dynamat the foundation of your system. Loud music in a car can induce a lot of vibrations on its own. So your Dynamat does double duty, damping the panel vibrations caused by loud tunes as well as road noise. Dynamat sheets are easy to cut, so you can apply them in all the odd-shaped nooks and crannies in your vehicle. Warming up Dynamat with a heat gun or hair dryer during installation increases its flexibility and improves its adhesion to the mounting surface. Warranty: 30 days.