The Great Equalizer!
The Boss GE-7 Graphic Equalizer offers seven bands of equalization in a compact, durable, package featuring low noise operation and a silent switching system.
The seven bands of available EQ are optimized for guitar and offer up to 15db of cut/boost in the following bands; 100hz, 200hz, 400hz, 800hz, 1.6khz, 3.2khz, and 6.4khz. There is also a level control that can be used to cut, boost, or equalize the effected signal with the unaffected signal.
I have used it to fatten and boost my leads, “scoop” the mids/boost the highs and lows for Modern Metal, tighten up a flabby clean sound for cutting through a mix, and to find and minimize feedback producing frequencies.
Placing the GE-7 before an overdrive or distortion pedal allows you to actually shape and change the overall character of your overdrive/distortion. Placing the GE-7 after your overdrive/distortion pedal allows you to accentuate or cut specific frequencies to add color to your sound without radically altering the basic character of your overdrive.
For the ultimate in tonal versatility, try using two GE-7’s. Place the first in front of your OD/dist pedal. Set it to cut the bass going into the distortion pedal by about 9 db, because excessive bass frequencies pre-distortion results in a muddy or flabby sound. Also, boost the pre-distortion mids at 800hz for a crunchy, biting attack. Next, place a second GE-7 after the distortion unit. Set it to bring the bass back up or even boost it a bit (try about 12 db of boost). Also add in some highs. This set-up works great to produce an absolutely crushing crunchy overdrive or 80’s style Metal sound.