noun
car stereo
Common loanword referring to an in-car audio system, including head unit, speakers, and related components.
新しいカーステレオを取り付けた。
I installed a new car stereo.
カーステレオの音質が悪くなった。
The sound quality of the car stereo has gotten worse.
Variant with interpunct, sometimes seen in product names or formal writing.
カーオーディオ is a broader term for the entire car audio system, while カーステレオ often refers specifically to the head unit or the combination of radio and CD player.
Loanword from English 'car stereo'.