Ok, so here's the deal. I'm thinking about purchasing a brand new Spector NS5CRFM and adding an Aguilar OBP-1 preamp (by a qualified tech) at purchase time. My two questions for this situation are: 1.) Will this void the warranty (I assume that it will)? 2.) Would this be a worthwhile upgrade? I've heard a lot of people talk about there being a significant headroom increase from a 9v -> 18v switch, but how do the EMG pickups on the Czech match up with the Aguilar pre? Nino, I can almost swear I've heard you talk about this combination before, so I'm definitely interested in hearing your thoughts. Also, anyone else that has any ideas feel free to contribute. I wasn't 100% sure if this should be in basses or pickups, but I think this is probably the correct place for it. I guess I'll let the mods decide on that one.