The BE10 is a redesigned version of the GE10 for bass guitar. Unlike guitar eqs, that start at 100Hz, the BE10 begins it's eq range at 63Hz. The reason for this is simple. Guitar equalizers just can not properly handle the low notes that a bass guitar creates. The open "E" on a bass resonates at 41Hz, far below the 100Hz cutoff of a guitar eq. By beginning the equalization process at 63Hz instead of 41Hz, the tone and "punch" of the low "E" is realized but the harmonic rumbling is left out. The result is a frequency range that lets you reach the fullest dynamic potential of your bass guitar, with the full freedom to get any tone that you desire.