Hi, I'm a huge Marcus fan.Currently I have the Sadowsky preamp in my bass.As always I'm thinking how I could get a little closer to "that tone". I have a used NTBT preamp that I could install in my 74 Jazz. Can somebody here tell me how it would be different from the TCT that Marcus has in his bass? What are the EQ center frequencies on the TCT? What makes a TCT better than the NTBT,Both are 9V 2 band, right? NTBT it's 30hz and 10 K I think.10k seems kind of high to me as opposed to the Sadowskys 4 k,but maybe that's a good thing, I don't know... Would that be a worthwhile change?