Just FYI & FWIW there was an article in Recording recently that had a DIY project for an in-line unit you could build cheaply to achieve similar results without boiling your mics, and all the other crazy stuff that was in that TapeOp mod. Don't have it handy unfortunately and can't comment on how difficult it would be, though it sounded relatively easy for someone with DIY skills. It was also said to be helpful for other dynamics.