Im not sure how accurate that is. I will say that its definitely more than the Mad Dogs but I like atleast one plug in. How much db boost would a Mad dog have?It means 4db boost from how it sounds with all ports closed. I will say that I am satisfied for sure. I dont think the pandora will have all the bass you want. I call it slightly above neutral but very impactful with good rumble on songs that have a lot of it. If the song is mixed with a lot of bass the pandora will reward you.
The amp I have now and the amp I had before could be the reason as well as there was a definite bass boost in my previous one, subtle but there as it gave my fostex mods some legs and the pandora sounded nice on it.