music hall 25.2 DAC mod

Could someone familiar with this DAC clarify one thing for me?
My understanding is that the balanced output circuits on this unit are solid state and the single ended circuit goes through the tube. Is this correct?

Rja,

That is correct.

Nonoise - thanks. I was really just wanting to know if you had the actual Gm data or the check marks (because I thought it was strange that mine had the check marks on the label and no actual data). Looks like you got the check marks too, which tells me that it must be a fairly standard/common way for him to do the labels.

This was my first tube purchase, so I'm new to tubes too.