Is it obligatory to leave a job at a company that manufactures headphones used for listening to music?

Headphones are a tool used for both good and evil. Anything that falls into this category is not forbidden to produce or manufacture unless it is highly probable that it will be used for unlawful purposes. In that case, it becomes forbidden because it would assist in committing a forbidden act, in accordance with His (Allah's) saying: "And cooperate in righteousness and piety, but do not cooperate in sin and aggression." Therefore, there is no objection to working on something that might be used for permissible or impermissible purposes, as long as its impermissible use is not certain or highly probable.