Okay, I currently have a Standard American Fender Jazz Bass with an S1 button, my bass, of course, is passive. I want an active bass because so I can achieve different tones. I bought the OBP-3 took it to my local Sam Ash and the guy was telling me how much work it would be to convert and install the preamps he told me it wasn't worth it (plus he hates active electronics) he advised me to not do it. So I'm just wondering is it even possible to install these preamps in my bass, has anyone ever done it before, is it worth it, any advice on how to get this done? Please help me with as much info as possible. I will be forever grateful. Thanks in advance!!