Hi It's great to have you guys available for advice. I'm in the process of fixing my basses. And I'm happy to say that they are a Zon Sonus 4, and a Modulus Q5. So, you guys should be familiar with these. My question has to do with preamps. Steve, my ModulusQ5 ( Bubinga/alder) has Lane Poor soapbars, and a Bartolini 12v. 3 way active preamp which is failing. Is there a better preamp that I can install to get a better combination of warmth and cut? What would you suggest? have you experimented with your bass? Michael, my Sonus 4 in a 1995 model solid ash, it has Bartolini Jazz size p'ups (don't know if single coil or double coil HB's. They are quiet ), and a Bart's 2 way preamp (stacked Vol/Vol and Treble/Bass). I changed the Wilkinson bridge to an ABM, and the tuners for Hipshot ultra lites, and I'm very happy with this. I want to upgrade the electronics too. Which Zon preamp do you feel would give me the most versatility? I want to enhance the cut , and growl, I feel the bass has a pretty warm tone overall. Thanks for your time and best regards to you.