I saw this on this fine beepre2 preamp page:
"The next thing we addressed was the need for a universal power transformer. The massive, well designed PT-9 universal power transformer used in the Kaiju 300B preamp was employed. The PT-9 also allowed us to improve the BeePre’s handling of voltage sag, which in a few cases caused some noise when a user’s AC mains voltage dropped below nominal and affected the original voltage regulators. The new fliament supply regulator adopted from the Kaiju is much more tolerant of those variations."
Someone typed "Kauju 300B preamp, I assume they meant Kaiju 300B amplifier? Anyway was just checking.
Thanks and go Bottlehead!