Ryan Adams didn't mention any hearing issues.
However, he did mention his fondness for death metal more than once. As noted, his set was acoustic, so the SPLs were not an issue. Unlike Lindsey Buckingham (who mainly fingerpicked his songs and strummed aggressively at some points), Ryan's set was mostly soft strumming - which made it even more subdued.
One more observation: Given the arrangements that I've described, Ryan's vocals were obviously front and center. I've never really paid too much attention to his singing, but I was pleasantly surprised last night.
However, he did mention his fondness for death metal more than once. As noted, his set was acoustic, so the SPLs were not an issue. Unlike Lindsey Buckingham (who mainly fingerpicked his songs and strummed aggressively at some points), Ryan's set was mostly soft strumming - which made it even more subdued.
One more observation: Given the arrangements that I've described, Ryan's vocals were obviously front and center. I've never really paid too much attention to his singing, but I was pleasantly surprised last night.