Rocktron Blue Thunder Digital Bass Preamp with Digital Effects Preamp with live and studio effects128 pro presets designed for bassSelectable hi-pass effects filter allows you to specify frequency ranges that are effectedWon't muddy up your low endCustom voiced bass effects including flanger, phaser, tremolo, delay, and reverbRocktron dynamic compressionMulti-voiced delay and chorusDistortion designed specifically for bass can be added to your dry bass signal and effect path independentlyUnique signal routing allows you to choose between an analog direct fe