I’m selling my Zapco HDSP-Z16V DSP which is originally designed for car audio. The system is very modular and I upgraded the stock DAC on the first 8 of 16 channels to the AKM 4490. This unit can also be upgraded to ESS 9038Pro for around $750 if you so desire. The unit is in good condition and 100% functional. I broke the door off of the optical port changing cables so had the optical port replaced but had to source component with a slightly larger footprint. This means there was a modification made to the input panel to accommodate the larger footprint. There are a couple of small scratches on the name badge as can be seen in photos. This is a great solution for DIY speakers and prototyping. I now use a computer sound card for my prototyping and prefer building passive speakers still🙂 This is a great sounding unit. Asking $1300 with free insured shipping in continental US.