New to me Gary Dodd headphone amp

So today i acquired a new to me headphone amp designed and built by the late Gary Dodd of Dodd Audio out of Texas. Not new, and based on what few posts i can find, there weren’t many made. And I’m not sure anyone has any documentation which why I’m here - I’m looking for first a schematic, and a owners manual would be nice too.

I opened it briefly before i purchased it. Not too complicated Gary’s reputation included using very good parts and his stuff got lots of high praise (from more than 1 poster!). Its a single ended design with output custom Dodd transformers designed qnd built for his gear. He also built and sold a line of boutique tube amps and a battery powered tube pre! in addition to these headphone amps.

Listening now and am very happy with my purchase.. lots of detail, mids are tube sweet and hearing things I’ve not before. (But this is my first dip into better headphone space, so maybe this is what i should expect.

Sadly it seems Gary has since passed and it seems like it was before he got a chance to grow what sounds like a business around some pretty nice builds. Too bad for us…

So for now, if someone has any documentation or knowledge of how to get it, that would be a big help! Thanks

Pic attached. And if anyone wants more, let me know.

Listen on…. and keep your smile.
 

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It runs 5842 tubes. Low impedence and enough gain. Interesting to find a smps inside for DC on the filaments. I woild have worried about noise, but I don’t hear any. It has top secret custom wound output transformers, and the secret died with Gary Dodd in 2015.

Been listening to it a bunch on my akg k701’s and am very happy. Until now, I’ve spent most of my listening time on a very nice tube/horns system but now I’m spending lots of time on my headphones! Been a surprise how much I’m beginning to like headphones. I doubt I’m selling the big rig anytime soon, but this is serious competition.