That would be an awesome transformer for an output.
That's one of Triad's best x-former's.
26 db I believe. More headroom than an A-24.
Good on a Pultec also.
Fairchild 670 also, I believe.
http://vacuumbrain.com/The_Lab/TA/Triad/triad_2.jpg
http://vacuumbrain.com/The_Lab/TA/HS-50/triad_hs50.jpg