Hi Gary
Thanks for taking the time to respond and your detailed comments. I certainly was not looking for a " which is better " type of inane comparison . These are SOTA preamps and 26 DB gain with your high efficiency speakers would be an issue. It's always interesting and refreshing to hear a different non commercial perspective. My only gripe against the GAT is that it is soo dependent on tube rolling. The stock EH 6922s were IMHO pretty ordinary. I have a pair of Amperex PQs 7308s but these are not the best of the best. That would be a pair of D getter 1956 Amperex pinch waist 6922s which are rare as rare.
NJoy your musical journey and do keep in touch
Best
Pradeep