How to adjust the sound effects of the audio system?

How is the soundproofing and audio system of the 2011 MDX? I'm considering getting one.

How do fellow Kia Sportage owners feel about the car's audio system? If you switch to Pioneer loudspeakers, is there an improvement in sound quality?

How do I operate the car audio system? It seems like there's no disc.

How is the sound system in the EHS9? I'm quite particular about the audio quality when listening to music.

Can the car stereo system of the Sharan play lossless audio formats?

Can the 2014 Sharan audio system support an SD card?

How to adjust the sound system when the navigation is not responsive?

How to adjust the sound effects of the audio system?

How to adjust the sound effects of the Acura RDX for the best experience?

Is there a big difference between the basic audio system and the high-end JBL audio system?