1. Extremely loud and intense: This is the most common meaning. It's often used to describe music that is so loud it "bends" your ears. Think of heavy metal, industrial music, or even just really loud bass.
2. Very impressive or mind-blowing: This meaning is a little less common, but it implies that the music is so captivating or unique that it leaves a strong impression on you.
Example:
"That new band's music is an absolute earbender! It's so heavy and loud, it almost hurts my ears."
"The concert was an earbender! The music was incredible, and the energy was electric."
Important note: The term "earbender" is often used in a positive sense, implying a sense of excitement or appreciation for the music. However, it can sometimes be used sarcastically to describe something that is simply too loud or unpleasant.