DSP stands for digital signal processor. The hardware DSP devices we carry from Universal Audio are designed to become a peripheral of your computer system that run the included dynamics and signal processing software plug-ins. Connectivity to your computer is either by PCIe, Firewire or Thunderbolt. The advantage these DSP hardware systems offer, is that they relieve your computer of using any of its CPU (central processing unit) to run highly processor-intensive software. Universal Audio has become an industry leader for developing some of the most accurate software emulations of the most sought after hardware processors ever produced. These plug-ins are only available to run on Universal Audio's DSP hardware systems. Contact us for more information.