I am a new player and I have an electro-acoustic Fender Newporter guitar. This guitar is from what they call their California series and they are all equipped with a built-in preamp with a tuner from Fishman. It looks like this:

I only play acoustically for now, I don't have an amp or anything. I have a regular tuner, but I was wondering if this on-board tuner can be used to tune the guitar when playing acoustically? I wasn't able to figure out how to turn it on. I guess it only comes on when the guitar is connected to an amp? Since I don't have one, I can't verify this.

Does anyone have a guitar from this series or know about them to be able to tell me whether the tuner can be used when the guitar is unplugged?


I've found the answer by myself. It's not very visible on the photo I've posted in the question, but there's two icons by the sides of the display. One is a fork icon and the other looks like an empty set icon. These are both physical buttons. They are kinda mushy and I first thought I was breaking the screen by pressing on them, but they are. Not sure what the latter does, but long-pressing the former turns the tuner on or off.

  • When you say empty set you mean [ ] or something else. I can’t tell from the image.
    – b3ko
    Jan 15 '20 at 18:30
  • probably a low-battery icon.
    – Yorik
    Jan 15 '20 at 19:16
  • 1
    Scratch that, it is phase inversion. See page 6 ( fmicassets.com/Damroot/Original/10001/… )
    – Yorik
    Jan 15 '20 at 19:22

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