Has anybody replaced the stock 18v Ken Smith pre in this bass or another Ken Smith bass with an onboard Mike Pope pre amp? As good as the bass sounds, I'm just wondering whether there is some further tone enhancement possible by replacing the stock pre with the Mike Pope unit. I would certainly keep the stock unit in case I ever sold the bass. Sometimes I just feel the bass could be improved with a different pre despite that it sounds good as is. Any other pre amps that are known to work well (i.e., better than the stock pre) with the Smith bass? What difference in sound might I expect between the stock unit and the Mike Pope unit. Thanks for your comments.