FYI reached out to bogner about the transformers - see below
On Oct 22, 2021, at 12:36 PM, Jorg Dorschner <info@bogneramplification.com> wrote:
No we don’t make our own transformers we have them made to our specs by a variety of companies.
I’ve read that there were a lot of problems getting a transformer to handle all the power demands of the XTC- so maybe he built it- internet blah blah- so who knows
https://reverb.com/item/40748989-bogner-ecstasy-101b-el34-3-channel-120-watt-guitar-amp-head-with-class-a-ab-switch-mm-transformers
This is a Vintage 1998 Bogner 101b with class A/AB factory option. This is the era that Bogner used Mercury Magnetic Transformers - Best sounding IMHO and best...
Just bought a 1998 XTC 101B -Apparently Bogner used Mercury Magnetic transformers in the earlier XTC's. After having several newer XTC's without the MM transformers - this is the best sounding by far. A lot clearer and tighter then the new ones IMHO. He never should have stop using the MM -...