Factory radio identification

I have a 2008 prerunner sr5 double cab, but I don't know which radio I have. I understand we have non-JBL, and two JBL (with or without a 6 disc changer) options. I have a "disc" button, but I only have a single in-dash cd player. Also, I do not have a satellite button. I'm looking around at all of the options for an auxiliary port, but I need to know which radio I have first. Also, do these trucks come with a sub woofer? I swear there's too much bass for it not to have one. If so, where are they located? I have seen how they do it in the x-runners, but I realize we don't have those setups.


Thanks for any help!

 

You probably have a regular old factory radio. I have the same one with a GROM USB interface and love it.
This is what I did....post 64

 

I like that setup a lot. So basically, it plugs into the 6 disc input and that's it? Have you had any issues? I like that GROM says it's updated the device to work with the samsung galaxy s phones because I have one, so I think I'm sold. I just need to verify that I have a radio that will work with it.

 

Yeah just plugs right in. Only thing I noticed is that on really hot days it needs to be reset. Unplugged (in glovebox) and plugged back in. Maybe once or twice a year.

 

My grom has been holding up pretty good. (mines double taped to the back of the radio)...definately recommend it.