I don't have any of that equipment so I don't know the answer to your question. But I sure would like to hear your impressions once you have had the chance to try out the El 8's with them. Let us know what you think. FWIW, my initial positive impression of the Peachtree Shift with the EL 8 CB...

I recently bought a Peachtree Shift to power my closed back EL 8 headphones. The Shift certainly seems to have more than enough power for the cans and the sound accords well with the rich tones of the EL-8. FWIW, the Shift also matches my Beyerdynamic T90's well.

I had a listening session with a friend in the wonderful Headphonebar shop in Vancouver. We started with the Nighthawk and went all the way up the chain to the Focal Utopia. (That's simply out of this world, by the way.) I own a 2016 vintage EL-8 closed back and a Beyerdynamic T-90 and these...

I have the genuine Leap Year model of the El-8 closed. According to the card, it was inspected on February 29, 2016! It may be that this pair incorporates the 2016 improvements, or it may be my aging ears, or both, but I certainly do not hear either an antinode (assuming I know what you mean...