My 2008 Impreza Outback Sport has one. It's in the center console, at the bottom.
If it has one it's in the center console along with an extra 12 volt outlet.
Yes, but need amplification.
YES.. there are lots of stereo's and lots of input adapters to fit almost anything.
Simply put, it is an "extra" audio input that allows a device to accept the audio signal from an external audio player.
Audio input is bringing sound signals into a device from another device, typically using a plug or jack.
If I understand the question, you are trying to intertwine different functions. Like your ears, the audio input jack receives an audio source, while the audio output jack transmits outputs audio content - similar to your mouth. If you are trying to redirect the input audio directly to the audio output port you will need a "passthru" (aka monitor) function. -P2E
Audio in is and audio input that can be used for recording purposes http://www.audio-dvd-maker.com
That would be where you connect anything with a STEREO AUDIO OUTPUT.
Audio: Line-in; Microphone
yes
Audio adapters are used for converting a plug into another style of plug. Audio adapters simply help one change the input plug of a certain system to a different input plug.
no