I just wanted to see if you were trying to scam people or just know nothing about car audio. Your "Bass Tube" is a capacitor. The meter on it is not a decibel meter, it is a voltage meter. The stuff you have for sale is worth nowhere near the $1200 you are asking.( Although I admit you can ask what you want, I have no problem with that ) Please revise your listing to be truthful or it will be reported as a scam posting.