mid 150's on music might be pushing it, burping that high without a wall is very pushing it. It should however be loud. id say low 150's on music, burping mid 150's at most. Good lucki wont have any numbers unitl late april early march... but in 3 different modeling programs it should do mid 150's on music and burp a 58 or 59... but we all know that you can never tell until its in the vehicle and the TL is up and running... honestly i dont care what the meter says... as long as its loud and sounds good i will be happy... if i am satisfied with 4000 watts i may not even put the 10K amp in unless i decide to go to a comp... it would just be for showing off anyway