Mtrspt5: thanks, good to know that you don't have to adjust anything because of EML. However, I have just got a pair of Psvane 300B grade A from Grant Fidelity (great service) that need burn in time And, from my experience with Black Treasure it will take some time. At the moment I'm at holiday; so I'm abstinence after some listening on my system :-(. And since you have a Manley power, like me, that uses EL34 I can tell you that I also ordered a pair of quads of 6ca7 Black Treasure. So as you probably can understand, I'm eager to check out my system.
At the moment I only use a pair of Golden Dragon 6SL7 in the preamp. So I could check out your Brimar; is this the best choice?