I'm afraid maybe something (liquidy) is telling you that your tube might sound better than it actually is.
Plus, when the Rolling Rocks are all gone, what will be next (yes, I saw that Sangria)? Milwaukee's Best?
Finally, the trouble with such marathon listening sessions as your partaking in is that you might find yourself too tired to crawl to the bedroom at some point and the floor can't be too comfortable.
After doing some auto work this evening and then installing a new cable onto my SR-60 (Pink mesh) Grados, I thought I'd put some Arturo Sandoval to test out the SR-60 classics with ... and just stared at the PS-500 and wondered when they'll get used next.
Yes, you are correct, but the tube sounded good enough to put a smile on my face....so I guess that is really all that matters....wait....that might not have been the tube , either.