Footswitch turns on the tuner and blocks the signal, the display shows tune, and entire screen glows green when the string is in tune, automatically selects the string

Tuner pedals shouldn't be super expensive, this is the best tuning pedal in it's price range

Great display tunes quickly, and accurate

When tuning, it's very responsive and accurate

It will get u close but I still have to fine tune it by ear everytime.

People giving this more than 3 stars must have either been paid to review this or have never used a decent tuning pedal

It,s to touchy hard to get the perfect tune that was my problem to begin

It was honestly as fast as any other tuning pedal I have used

Accurate tuning

It DOES do a fine job tuning the guitar, but I've had problems with it messing with my signal chain.

Accurate tuning and very responsive, silent foots witch as well!

This also changes color when you reach proper tuning & doesn't take up much room either

The silent tuning mode will really be nice during my sold out concerts in local stadiums.

But it does exactly what I need on the pedal board - fast, silent tuning during live performance.

Tiny package, great deal; been using it for at least couple of weeks, and very sturdy despite its size, great visual flags once you hit the key your are tuning to, and total kill in noise during tuning

Great tuner ... no problems at all... and perfect tuning at all times 👍🏼

Accurate tuning, muted signal when tuner is active, VERY bright display

I usually end-up "fine tuning" with my ears

Great tuning and also cuts sound off from my amp

great little tune pedal

There is a slight slight delay when tuning

Many of us guitarists/bassists are worried about perfect tuning

Unfortunately, the Donner struggles in two of the three areas.(1) Tune accurately

Accurate tuning, BUT when you press in the pedal to tune, there is a loud pop that goes through the sound system

When tuning on a dark stage before a set, the red and green lights are super bright

The pedal is generally quiet when tuning, but there is a LOUD "pop" or "click" through my amp or PA (depending on situation) every time I activate and de-activate the pedal

Bypass it clean and works as it should, no noise, accurate tuning, great sensitivity and easy to read display

So far, very pleased with the product, tuning is accurate, not noisy when switching it on as some people have described

but I will say that it's reletively accurate to the point where even if the tuning is not perfect it's close enough to where there's no issues with it at all

Finally, it just stopped working for the higher strings (G-B-E) altogether.