"Steve Nosko"
wrote

Hmmmmm... Les see... I don't know this rig, but...

No dip.

You say: "The amp can be tuned though, but I only get 50 W HF out..."

I don't know what "tuned through" means Do tell.

***** Through has a different spelling and meaning to "though",let's
ask the OP what he meant!

Brian Goldsmith.