TU-3 : Great tuner

I bought this pedal to allow for accurate tuning in any environment.

I considered some cheaper alternatives but got the opportunity to test this one next to a nux tuner and the difference was big enough to convince me that this tuner is worth it.

If you just need to tune a guitar tuned in E standard "good enough" for a rehearsal or practice at home, you can probably get away with a cheaper alternative - although this pedal certainly makes that easier and quicker as well.

When working with down tuned instruments this pedal is definitely more accurate though; I've successfully both tuned and setup the intonation of several guitars and bass guitars tuned as low as B-standard with this pedal.