The MI Audio Blues Pro Overdrive Guitar Pedal's no-nonsense circuitry offers effects that are very 'immediate'. There are no internal trimmers, so that with the Blues Pro you get a very easy-to-use pedal, with the classic configuration of Gain, Tone and Volume. The MI Audio Blues Pro is a bit compressed, which gives the pedal a bit of extra punch. Blues Pro is an overdrive that also sounds throaty in high gain settings.
In the Fuzz mode the tone control becomes more of a 'sponge' control. With the tone all the way up, the Blues Pro pedal sounds like a louder version of the original. As you turn the Tone control down, the response time of the Blues Pro increases. This sounds particularly cool on chords. Turn the MI Audio Blues Pro Overdrive effect's Tone control all the way down, and the tone takes a second or two to settle.