Mad Dog Predator 5.1 DSP 6 Channel PCI Sound Card HD-51 NIB Vintage Audio PC
RareMad Dog Predator 5.1 DSP 6-Channel PCI Sound Card (Model HD-51) —. Model:Predator 5.1 DSP (HD-51). Compatible with legacy PCI slots, this is an excellent choice for retro PC builds or restoring older desktop systems.