Hi Guys.I got the problem sorted out. Because of the pandemic I have some of my equipment in storage and tried simpler portable sources..Here is what I came down to:The cell phone worked great, even though it was NOT an iPhone as MillerCarbon would like..,I wanted to use mine because of the ESS Sabre Quad Dac.The Walkman didn't have any sound what-so-ever.Nothing.I tried 3.5 MM and USB connections.Nothing.The USB hard Drive kept saying no playable files,so nothing there either. The USB drive worked great but not sounding as well as the phone.Thanks guys for your suggestions and those that offered help.These trying times forced me to go outside my comfort zone and try something new. Cheers!