Dear Programmergeek, I am sorry and surprised to learn of your frustration with the Io Eclipse. This is the sort of thing that causes end-users to abandon tubes in favor of solid state. Don't give up too easily. You might contact Albert Porter; he used an Io happily for many years, although lately I think he must have switched to Allnic H3000, since he is a dealer. But he may be able to give you some tips. Sounds to me like you have one or more bad tubes in there. If the issue is on one channel vs the other, you might identify the culprit by switching one tube at a time from one side to the other, until the noise shifts with one tube change. Or variations on that theme.
Never had any such issue with my Atma-sphere MP1.
Never had any such issue with my Atma-sphere MP1.