The P600 Tuner features a bright 4 LED display that clearly shows you what note each sting is in, allowing you to tune your guitar easily. The pedal is designed to produce a sensitive and stable tuning, letting you get the perfect tuning each time to keep you playing for as long as possible. 6 of the outputs provide 100mA which powers most of the standard pedals, and 2 outputs that provide 500mA which can be used to power the bigger pedals.8 9v outlets100Ma x 6, 500Ma x 2Tuner Mode Chromatic4 LED display sensitive[embed]https://www.youtube.com/watch v=HlxPNbgimaU&feature=emb_logo[/embed]