One thing occurred to me about this transformerless mod -- it seems like one important function of the transformer in vocal mics is to block DC current (oops, that's like saying "with au jus", but simply saying "DC" isn't always clear) -- that is, it's a safety thing. Not that anyone's talking about using these for vocals, but I was thinking that if I (accidentally or on purpose) used the transformerless mic for a live performance at a venue with a flaky house system, it could wind up shocking somebody when a transformer-ful mic would not have.