Price paid: A$ 120
Purchased from: Online
Sound — 10
I use it to tune a Maton MS3 electric or a Cort or Cole Clark Acoustic through this. The tuner does not degrade the sound of the guitar at all when played through it, and can mute when tuning without any pops or buzzes. It tunes very precisely, and with the extra lights tuning is very quick.
Overall Impression — 10
Overall this is an accurate, high quality tuner which feels indestructible. Tuning is a breeze. Boss have improved on the most important and basic features of a tuner while adding some minor additional features for those who like extra bonuses. I saw a video on youtube (called: "Boss TU-3 VS TU-2 Tuner Head to Head Mini Review") where the TU-3 actually picked up notes slightly quicker than the TU-2. Whether or not this is fact, it certainly doesn't struggle to Pick up a note quickly.
Reliability & Durability — 10
Having only had this for several months, it is hard to say without a doubt that this is more durable than the TU-2 but it is certainly made from the best materials. Boss are renowned for making durable pedals and I would certainly depend on it. It is solid as a rock and you would have to try very very hard to break it.
Ease of Use — 10
The TU-3 is a high quality tuner which is extremely easy to use. It has the ability to tune by string number, drop tune and fine-tune a pitch as does the TU-2. These functions are fairly basic to use. Though I rarely use many of the new bells and whistles, the most basic tuning functions have been improved. It picks up notes promptly without any lag. There are more LEDs than the TU-2 making it visually more easy to read. There is also a high brightness mode which I haven't really had to use yet, though if playing outside it may be useful. One of the handiest new features visually shows you when you have sat on the correct pitch for a period of time and the string is "in tune".