I am thinking about putting an aftermarket onboard preamp into my Yamaha TRB6 (the older model). The current pre seems to be fried and I don't think I can find a replacement without buying all the parts from Yamaha separately and going solder crazy. I was looking at the Audere but it says passive pickups only. This is the bass: TRB6 - TRB Series - Basses - Guitars & Basses - Musical Instruments - Products - Yamaha United States Any suggestions would be GREATLY appreciated. Thanks!