Behringer bxd3000h ultrabass bass amp head behringer bxd3000h behringer bxd3000h ultrabass bass amp head br the ultrabass bxd3000h is a 300 watt 2 channel bass amp head designed specifically for the bass player who requires the ultimate in tonal versatility armed with behringer s proprietary ultrabass sub harmonics processor the bxd3000h cranks out unbelievable low end plus our revolutionary shape filter provides precision sound sculpting to satisfy even the extreme tone connoisseur br