The Graphic Equalizer is an 8-band equalizer with band centers at 63, 125, 250, 500, 1000, 2000, 4000 and 8000 Hz. Each band can boost or cut up to 12 dB. Simply select the desired band with navigation buttons and use the value dial to vary the gain. The Q value of each band is 1.414
The Graphic EQ can also be used as a booster. To use the EQ as a booster simply emphasize the desired frequencies and set the level as desired. For a treble booster, for example, one might boost the 2K, 4K and 8K by 6 dB or so and turn the level up 12 dB. The parametric equalizers (see below) can be used in the same way by simply turning up the high-shelf gain and increasing the level.