1. Listening to loud music isn't good for your ears, either.

2. Also, listening to loud music isn't good for your ears.
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Are both the same in meaning?

Depending on the context (the other sentences before and after this sentence), they could mean the same thing, yes.

Yes, both sentences have the same meaning. They both convey the idea that listening to loud music is harmful to one's ears. The only difference is the structure and word choice, but the overall meaning remains unchanged.