Interesting post, Erik. I'd like to hear Jeff's comments. The design of my 2A3 monoblocks is a little different from the Horus, but they do have the cobalt transformers, and I'd say, "Save away". I didn't think they were currently available, but Jeff may have been brand-specific when he told me that.
Once again, you've posted an informative, thought-provoking thread, with make-me-drool pics of your work. Nice job.
SSH