Hello, I have a schecter stiletto from a couple years back. I really like the pick up but I dislike the preamp. Its way too noisy, esp since I like mids and highs in my bass. I took a quick peek at bestbassgear.com, and typical preamps tend to cost around 150. T wo questions. Question first. Do preamps for passive pick ups differ from pre amps for active pick ups? Question second. Has anyone come up with a reliable DIY solution? Me solder iron is me friend. danke.