Boss GEB-7 Bass Equalizer 7-Band Graphic EQ Pedal GEB7 BCT-TUNER the B2520 PRO has a

the B2520 PRO has a wide frequency response of 50 Hz - 18 kHz

50 mA (DC 9 V)

full of subtle nuance

Weight (including battery): 415 g (15 oz)

and a solid state rectifier

Boss GEB-7 Bass Equalizer 7-Band Graphic EQ Pedal GEB7 BCT-TUNER the B2520 PRO has aThe Boss GEB 7 Bass Equalizer Pedal is compact in size but features a wide frequency range from 50Hz all the way up to 10kHz. It has 7 sliders, 3 of which cover the critical midrange (400Hz, 500Hz, and 800Hz) where the character of the bass sound is determined. Each slider on the Boss GEB 7 equalizer pedal boosts or cuts over a + 15dB range, allowing for substantial tone shaping capability.