Are the EQ settings on your amp not getting you the tone you want? This EQ pedal has six controls and can be used for a variety of options, such as de-muddying your low end, boosting the highs for a solo and everything in between. This also works well on bass.
 
CONTROLS
Six sliders - 100Hz, 200Hz, 400Hz, 800Hz, 16kHz, 32kHz