As for sound clips just go to you tube and search for nissan titan, they are all over the place. You do have to remember that even though this may give you some idea there is no substitute for actually listening to a system. These recordings are made by different equipment at different distances with different background conditions, well...you get the point, and depending on your computer set up, your speakers may not do them justice. I just ordered a magnaflow cat back based on recomendations from people on this and other sites. I picked this system not because it the loudest (it's not) or the best performing (opinions vary) but it rated well in ALL categories without being to lound. I took the time to find people with magnaflow systems in my area (couldn't find any on a titan) and it gave me a good idea on what to expect. So there is my 2 cents, pay attention to what people on this site tell you, but there is no subsitute for getting out there and talking to people and hearing what they have in person.