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THE PRODUCT

Action Tuners String Master guitar tuner

**THE CLAIM **

As you pluck each string, the String Master automatically tunes your guitar by turning each peg with its motorized robotic grip.

**THE TEST **

I used it to tune my band’s electric and acoustic guitars.

**THE REAL DEAL **

Although it adequately tuned the electric, the tuner sometimes took 30 seconds to find the correct pitch for a single string on the acoustic. Worse, it completely detuned my E string and tightened my G until it broke.

**BUY IT? **

No. You’re better off turning the pegs manually.

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