The Boss TU-2 is a chromatic tuner that is suitable for use with any electric stringed, but most popular with electric guitar and electric bass. If you’re playing shows at all, the TU-2 is a must have, as the LED lights that it has make it possible to see it even in the dimmest of situations. The pedal has all the basic characteristics of a standard Boss pedal, with both options for running it on a nine volt battery or power supply. It’s also got ¼” jacks for input, output, and a bypass output as well. Another plus with the TU-2 is that if you buy the optional daisy chain you power other pedals with it, up to eight others that run on nine volts to be exact. This is a huge feature as far as I’m concerned, as I use it to power up a number of other Boss and other brand pedals that require this amount of voltage. As far as the tuner itself is concerned, you can use it with a few different modes of operation, but I only tend to use it in chromatic mode rather than the specified modes for bass and guitar as I find it easy to use. You can also have it spin in a few different ways in terms of how it shows you where you’re at in tuning your instrument, but again I tend to use the standard mode here as I find it easiest to follow. The TU-2 is quite cheap for a versatile tuner like this, as the TU-3 has been out for a little while now and I believe the TU-2 has stopped being made. There isn’t too much of a difference between the TU-2 and TU-3, so if you can snab up the TU-2 at a cheaper price, I’d recommend doing so. The Boss TU-2 is really a must have for all gigging guitar and bass players…