Hey, whats up. Im looking to get a preamp for my spector NS2000-Q5. Im looking at two aguilar preamps. My first question is what is the diff between the onboard OBP1 and the outboard DB924, other that one is onboard and the other is not. which one is better. If I get the onboard will it be easy to install or will I have to have it done for me. If I get it installed at a shop how much will it cost.and what type of sound am I going to get out of these. thanks in advance.