Noob radio removal

[Bassetlounge]

I have searched forthis answer, but I haven't found it quite yet.. I am planning on adding an aux input jack to my stock AM radio. I am not quite sure how to take the radio out. I will remove the ashtray and the heating/vent control first, but how does the radio actually come out?
Do u remove the knobs first? Do they twist off? Pull straight out?

I apologize in advance for asking what appears to be an easy question. I am new to this, and don't want to break it.
Posted via Mobile Device