From a glance at the manufacturer’s website your amp appears to be far more sensibly designed thermally.
OTL amps, my pick for the tube used.
This is my OTL tube pick for an OTL the 6C33C tube.
I don't believe much can compete with it for current, and that the big achilles heel of OTL's
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-1.jpg
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-3.jpg
Just had to show this, in it's glowing glory.
Cheers George
I don't believe much can compete with it for current, and that the big achilles heel of OTL's
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-1.jpg
https://www.navisonaudio.com/uploads/images/thumb_medium/otl-150-3.jpg
Just had to show this, in it's glowing glory.
Cheers George