Vineman55, there is varying Quality in Balanced Outputs, Analog and Digital. The Space-Tech-Lab Balanced Digital/Analog Outputs on my Pioneer best match the same Inputs on my other Space-Tech-Lab Equipment. I am not familiar with the DAC1 Pre, who makes it, and which specialty Audio Store did you buy it at? The Digital Balanced Input on your DAC1 Pre, was made with a particular Balanced Output in mind, probably a Disk Drive made by the same Manufacturer. I would recommend checking with the Store where you bought the DAC1 Pre, they might have a Technician who can install the matching Digital Balanced Output on your Pioneer. It would be a Digital Balanced Output made by the same Maunufacturer as your DAC1 Pre. You could mix and match Balanced Digital Outputs, but it would be a cluster____. Best to minimize the random chaos in Chaos Theory. My suggestion, your choice.