The CastleRock Bass Equalizer Pedal is specifically designed to modify bass guitar frequencies and provides 15dB of either boost or cut on any one of its 7 filter bands. That's a lot of EQ power that will allow you to get the exact sound you want from your amp rig. This pedal is made of a super rugged metal chassis, rubber footwitch tread, and non slip rubber back.
Tech note: Use the CastleRock Bass EQ to cut the super low bass frequencies from 10 inch speaker loaded bass cabs to allow you to use more power and increase your headroom. Sounds backwards but sometimes you can actually get more useable bass by cutting bass.