I have been using a clip on guitar tuner for a few years now but I still don't know what the switch at the side is for - it has an option for a flat symbol of a sharp symbol. Can anyone help?

  • 2
    picture... make... model...?
    – Tetsujin
    Jan 16 '19 at 18:09

Could be many things, but I would guess that this is to change the frequency you tune to.

Standard concert pitch is A=440Hz, but for reasons, you might want to tune sharp or flat from that standard, and those buttons (probably) allow you to do that.

  • 3
    Practical test - if pressing + makes it say 441, 442, 443... then you're probably right
    – Tetsujin
    Jan 16 '19 at 18:21
  • These buttons likely allow you to calibrate the tuner itself to a fixed pitch instrument like a piano or pipe organ, so that your guitar will sound in tune with the piano when the guitar is tuned with that device. Jan 16 '19 at 19:06

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