What are passive noise canelling headsets cancelling headset? The most common type is the kind that goes over your ear and completely encloses it in a shell. There's soft padding around the sides so it conforms to your head. This type of shape is called circumaural, although you need to know that not all circumaural's are noise cancelling headphones.
First of all check for any gaps in the wood. If you notice them during winter, that's OK, but during summer you need to fill in those gaps. Next you need to sand which means using tools such as drum sander, buffer, palm sander, floor edger, a vacuum cleaner, all tools that are quite noisy in nature. This is why wearing ear defenders such as ear plugs is quite necessary. Also avoid leaving the sander in one place all the time as it tends to damage the wood.
ANC is the more technical and expensive variety and is regularly used by pilots. These are over the ear headphones as passive noise cancelling headset apposed to the in ear variety. These have a small microphone in them which is what makes them work.
Bass If you are the type of person that likes a lot of bass then these might not be the headphones you want, although the bass is there. It does not have as much bass as Bose.
Listening to music too loudly will cause you plenty of problems in the future. It's best that you wear headphones turned down to an appropriate level. If you frequently go to concerts, then you definitely need to wear ear plugs. Ear plugs are also useful to wear in the club, but this is typically not done for fashion reasons.