11402-58 A perfect pairing of massive sounding Quarter Pound pickups and our most aggressive bass pre-amp to deliver bass tone as versatile as it is crushing. The man who held down the low-end in Pantera knows bass tone. Nowadays. Rex’s style runs the gamut from soulful blues-based rock. to the rib-cage rattling metal he’s so well known for. Rex recently fell in love with our Quarter Pound PJ set. but also wanted the power and versatility of our most aggressive active pre-amp and EQ. and the ability to quickly and easily engage it with a push/push volume potàthe Rex Brown Quarter Pound PJ System was born!