Im in a bit of a dilemma here. I don't know whether to go for the Aguilar tonehammer preamp/DI or the Aguilar Obp-3 onboard preamp. Im enthusiastic about improving my actual bass, but with the preamp I only get three bands of Eq as opposed to the tonehammer which has 4 bands of eq and overdrive, and of course the all important XLR out(DI). The tonehammer is like $80 bucks more than the obp-3. Also, if i were to go with the obp-3, how much would it cost to have it installed. Any advice on this much appreciated! EDIT: If anyone wants to suggest superior onboard preamps please do (3 band preamps)!