Check speaker's connector on the other side of stereo system. If stereo system have fuses, check it also. If stereo system doesn't work anyway, I think, that stereo systems amplifier is broken.
By the quality of sound coming from the speakers.
depending on the headunit you can output the sound through your car stereo speakers
There are many features of an average Boss car stereo. The main features of an average Boss car stereo would be the good quality surround sound that the system provides.
You can get tips on how to auto upgrade the sound from your car stereo on websites like Youtube, and Crutchfield. You might not even have to buy a new stereo, and if you do, there are countless models to choose from.
Fuse could be blown, or a speaker wire loose or come off.
you have a ground loop, use a ground loop isolator to get rid of it.
The prices for Audiobahn and Bose car stereo equipment is comparble. I personally prefer Bose products,for the hig quality sound they produce.
The beeping sound should stop by itself. If the beeping does not stop, then your stereo has a technical issue. Once you get your stereo fixed, it should stop beeping after a little bit.
Yes, you can buy a new stereo system for you car. You can find ones that make the bass sound great. I would look at an auto shop like Pep Boys.
If you are not happy with the sound of your car stereo, you can always buy a car audio equalizer. For the best quality sound this is a good option. It does come with a price though.
make sure your antenna wire from car is hooked up. stereo will have no sound until it is.