Lower DEQX - The HDP-Express II [$2.950] "packs much of the technology of our flagship HDP-4 in a cost-effective new design. Like its predecessor it provides DEQX Inline™ correction for your existing speakers, room and media plus facilitates precise integration of one or a pair of subwoofers. The Express II also supports 2- or 3-way active speakers for those opting for DEQX XO™ Active configurations. It uses professional-grade components and power supplies while the HDP-4 is outfitted with audiophile-grade parts throughout adding a linear mains power supply. DEQX kept the price of the Express II down by moving all front-panel controls to the remote and deleting the HDP-4’s balanced analog and digital outputs for a simpler chassis."