Check the listing for details. Boss GEB-7 Bass Equalizer Effect Pedal. Condition: Open box. Listed at 116.89 USD. The GEB-7 is a seven-band equalizer created specifically for the frequency range of the electric bass. Since the frequency range extends down to 50Hz, the GEB-7 is also great for adjusting depth and bottom end of an upright bass with pickups. The GEB-7 can also be used as a low-pass filter creating an ultra-low synth-like sound.Features:50Hz to 10kHz frequency range specifically designed for bassFull range response, even for five- and six-string bassesCan be used as a "boost" or "cut" pedal using the level control knobGreat for eletric-acoustic bass applicationsAC adaptor or 9V battery operationOrder your Boss GEB-7 Bass Equalizer Effect Pedal from Sam Ash Direct today with the security of our 45/60 day return/price protection policy, and be sure to take advantage of our fast, free.