Mooer Baby Tuner

It is a highly responsive and stable tuner, and the size, solid metal casing and LED lighting make it a great item that is easy to use and see on a dark stage. Having said that, the (defective?) unit I received makes very noticeable electronic noises when in tuning mode.

Stepping on the switch to engage the tuning mode cuts off the signal from the signal-out connection. There is no option to allow for tuning without cutting the signal, which is sometimes necessary in a live situation or due to the set up of your pedal signal chain.

As the LED lights switch on and off rapidly to display the graphical equivalent of a shifting needle on a tuning meter (to indicate your pitch) the unit buzzes, whizzes, hums and beeps like R2D2 -- only not nearly as cute. It would have been somewhat tolerable if I had the option to let the guitar signal through and perhaps hide those horrible noises, but I can't.

I had thought about returning this unit, but am now considering keeping it for its size, price, high responsiveness and LED-lighting feature. I will just have to go to the amp and turn off the standby switch every time I'm tuning. I haven't made up my mind yet *sigh*

Bought it for playing guitar at home and gigging.

Pros:
- Very aesthetic (at least IMO). Beautiful colours and contrasts.
- Some tuners that use red and green are impractical for me because of my colour blindness. This one shows blue if it's in tune, and red/green if it's not, which makes it really convenient for me.
- The tuning is fast and rather precise.
- True bypass.

Cons:
- The biggest con is that it doesn't tune the low E string well for me. Almost all the time, when it says that my low E is in tune, and I check it with the A string, it seems to be tuned a bit too high. So I always have to tune the low E in a way that the tuner shows it's slightly flat.

All in all, I like this pedal, mostly because of it's beautiful colors, and the problem with low E tuning doesn't bother me too much, but it's still an issue.