Well, here's an update, almost a year later. I put a new gain pot into the Arcam, and it even has the same stock number, so many years after manufacture. It was all green grass and yellow balloons for a while, and then the right channel was failing to make sound...AGAIN. Then, I foolishly killed my Cyrus as I posted elsewhere. Today, I hit on an idea, thinking it would at least be a troubleshooting step. I plunked the Yamama M-35 on top of the Arcam and connected its inputs to the Arcam's tape outs. Speakers connected to the Yamaha in the usual way. It works! The Arcam is back to being a phono pre and a source selector.