Howdy, guys. Here's the update. I did as Tvad suggested, and connected the left preamp output to the right amp input and vice versa. The sound shifted left of center. Replaced the cables to proper connection, and the image shifted right of center. Did the same with the CDP output to preamp input, with same results - image shifted left of center when cables sent to opposite channel inputs, and went back to right of center when connected properly.
The pre and amp are both SS, but the Ayon CD-2 uses 4 6H30 tubes, 2 per channel. I'm going to assume it's the tubes and try at least 2 of the other 3 sets of tubes I have for it. If the issue isn't fixed with any of the tubes I'll pull out the Opus 21 and make sure the problem is the CDP. If the issue exists with the Opus as well I'm going to be flat mind-boggled.
Again, thanks to everyone for their thoughts on this!
The pre and amp are both SS, but the Ayon CD-2 uses 4 6H30 tubes, 2 per channel. I'm going to assume it's the tubes and try at least 2 of the other 3 sets of tubes I have for it. If the issue isn't fixed with any of the tubes I'll pull out the Opus 21 and make sure the problem is the CDP. If the issue exists with the Opus as well I'm going to be flat mind-boggled.
Again, thanks to everyone for their thoughts on this!