Behringer EQ700 Graphic Equalizer

Most acoustic and electric guitar energy lies between 100 Hz and 6.4 kHz. Even slight changes in this range can cause a tremendous variation in overall energy and impact, as the human ear is especially sensitive to this range. Boosting frequencies around 200 Hz - 400 Hz often provides warmth and body, while boosting frequencies in the 3.2 kHz - 6.4 kHz range adds clarity to clean guitar signals. Depending on the amount of distortion, this same range can ruin the sound of an overdriven electric guitar by adding harsh harmonics. One of the most common mistakes is adding too much bass to acoustic guitars. If the low frequencies are boosted excessively, acoustics can easily get lost in the overall mix. Most acoustic guitars are also prone to feedback in the 200 Hz - 400 Hz range. A general rule of thumb – the best results are often achieved by finding and reducing the frequency bands that are offending, and then turning up the overall volume, rather than boosting one specific band.