Ultimate 7-Band Graphic Equalizer. With 15 dB available boost or cut per band, the BEQ700’s seven frequency bands have been carefully chosen to provide the ultimate tools for EQing the bass guitar, even extended range instruments. Of course, to make full use of its capabilities, you should first understand some basics about the frequency range of your axe. The BEQ700 covers the audio spectrum from below 50 Hz to over 10 kHz, allowing you to effectively cut or boost specific frequencies that help focus your sound. Special attention has been paid to the critical midrange frequencies, which can either make or break your sound. The following section offers tips that will have you sculpting the perfect bass sound in no time at all.