TAD 150 Pre Amp transformer died

I would think you just need the transformer specs. You can then order from Hammond. Just look at the tranny and write down all you see......hopefully there are stickers etc...

No need to use the same tranny. Just a tranny that meets the specs needed.

No stickers, no specs. Repair shop wrote down 4 numbers he said were important, think they represent voltage.
on the left (incoming): 110
on the right (outgoing): 200 11 32

If you had a choice between Torid vs CI, would you choose one over the other ? (original was torid)

Mercury Mag said they wouldn't make a torid for audio but could probably make a CI that would work.

Hammond might be able to make a torid version.

I would replace with the same style they had.... Torroid.

Not sure if they're still around but did you attempt to contact Audcom?

Sounds like Audcom is no more.
I heard years ago the factory closed (maybe burned down ?).
One dead end after another.
Hate to end up selling this for parts...