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Upgrading 9Volt preamp to 18Volt (Fender)

Discussion in 'Luthier's Corner' started by Ampig, Apr 1, 2005.


  1. I'm getting ready to purchase a 1996 Fender American Deluxe Precision. It has the old 9 volt preamp. I've heard that the 18 volt preamps are better sounding. What's involved in doing an upgrade?
     
  2. I'm not sure where that bass has the battery (if it's a box or if it's inside the control cavity), but I'm assuming that you would have to make room for the additional battery (most likely that would mean some routing). I wouldn't do that on a new instrument. Whoever told you that an 18v 'sounds' better than a 9v is making a very misleading remark. The only difference (all other things being the same) between a 9v and 18v is the latter has more headroom (how much louder the pickups can get before the preamp overloads and distorts). This isn't likely to be a problem with that bass, so unless you're going to completely replace the preamp, I'd say the bass will just seem 'louder'. My opinion.