Hi there I'm playing a MIA standard P-BASS, Daddario Chrome flatwound -- The tone is classic P and I am really satisfied with its low-mid growl and punchy. What I mentioned the low-mid is around 100hz-150hz. (really nice for grunge style) However there is not much real low end freq below 80hz (for some song of psychedelic/stoner/dub style) even with Ampeg SVT. I know the Fender 62 vintage Jazz Bass and Gibson EB-3/SG standard(cheaper) has full real low freq I was talking about. Is there any suggestion for me to get more real low end freq on my current P bass? In short, I want the punchy low-mid of P and boost the real low. Any suggestion is welcome like set of strings, pickup, pedal btw If I really have to buy a new bass I will choose between JB62 and SG bass. thx a lot - reply: the ultra low is on and I try to boost the bass on SVT pro 7. I get more low but muddy, not tight. so as the sound engineering of livehouse said. He said to boost a frequency which not naturally exist only get a poopy muddy tone. btw my current bass tone sounds like this in my opinion is somehow too muddy.