David Nield is a technology journalist from Manchester in the U.K. who has been writing about gadgets and apps for more than 20 years. He has a bachelor's degree in English Literature from Durham ...

Pranay Parab is an independent tech journalist based in Mumbai, India. He covers tech for Lifehacker, and specializes in tutorials and in-depth features. The volume mixer is one of the most useful ...

Whether you’re watching a feature film or a television show, you’ve probably noticed big fluctuations in volume levels, especially when a commercial break pops up and nearly shatters your eardrums.