Hi, I own and owned neck-through and bold-on Basses. I really can´t say that you can go deeper with bold-on or neck-through. The only differences I noticed are the following: Neck-through has more sustain and less punch. On the other side bold-on has more punch and less sustain. But the sound comes from all parts of your bass. So it apply´s not for every bass in this or that construction.