Korg's Pitchblack is a chromatic tuner pedal, designed primarily for use on the stage. It has LED meters so you can see the pedal in, you guessed it, pitch black. It also has four modes to choose from and is about the average size of a guitar pedal. The LED meters are definitely brighter and larger than most other chromatic tuner pedals that I've seen out there, which is great for shows. It's got a standard make up with 1/4" connections for input and output and power can be achieved by plugging a 9 volt power supply into the jack in the back. You can also change the calibration and display with controls on the back of the pedal. Like the Boss TU-2 and TU-3 chromatic tuners, it also has a power supply output for connecting a daisy chain and powering up other pedals, although I'm not sure what the full range of compatibility is there. There aren't any other technical characteristics to worry about, and I think that users will be able to catch on very quickly when it comes to tuning your guitar or bass with this pedal. The price is a bit cheaper than the Boss chromatic tuners, but isn't that much cheaper when you consider that this seems to be a bit less sturdy than it's competition. It should still last for a while, but I don't own one and can't say for sure. I do own the Boss TU-2 and it has served me well for years without problems, so it's definitely worth considering that if you're looking at the Pitchblack for a chromatic tuner. Pitchblack is a nice design but it's not groundbreaking. I do like that it's super simple and gives you only the basics, but it does seem like it could be a bit better built in terms of it's casing. Either way, it's worth checking out if you're looking for a reasonably priced tuner for your live show.