Grace Design REX - Microphone Preamp PedalThis is the little nipper, but dont judge Grace Design piled up everything they know from 30 years of designing mic preamps, zapped it with a shrink ray and crammed it all into a minty fresh green BIX style chassis. With bonafide Grace Design mic preamp pedigree, it will give any studio rack preamp a run for its money. But REX is really designed to be velcroed to a pedal board and hit the stage. Simple high and low tone controls, a 10dB boost circuit