Einstein OTL amps experience

I am expecting a set of Einstein Mk 60 amps to arrive on Friday along with the Einstein pre. I am using Acapella High Campanile speakers.
My current amps are Atmasphere MA1 mk 3 with Supratek Grange pre.
This will end up as a personal shoot out between OTL amps and 2 great pres.
I have an Einstein phono stage on order but it is back ordered for now.
That will be the true test for me as I am mostly into analog. For now I will use both preamps. The amps will go in the system for some time prior to the pre. I am use to the Grange so I can make a fair comparison of the amps before I install the Einstein pre.
I have been told that the Acapella Campanile speakers are voiced at the factory using the Einstein amps so it should be a good match. ONTH the MA1 amps have twice the power. We shall see.
BTW anyone in the So. Florida area is invited to hear this system. Just send me an E mail to set it up.

I forgot to mention that the amp portion of this shoot-out will also include a set of EAR 519 push pull 100W tube amps and a set of Bryston 7BST high power ss amps. I will include these in the game for overall evaluation of power requirements etc.
BTW for another little shoot-out I will be comparing tonearms on my Galibier table set up for two arms using Schroeder Reference SQ and a Tri-planar VII.
Two carts will be used. A Dynavector XV1-s and a VDH black beauty.
The next several weeks should be fun.

It is possible I am mistaken here but to be exact my Atma-sphere amps are Ma1 Mk 2 Silver edition upgraded at the factory with power supply boost and Caddack resistor package. I thought the upgrade brought the amps to mk 3 status as well except for the auto bias which I really had no interest in having. BTW the improvement is much more that subtle after the upgrades and tube life and reliability has been improved beyond what I thought possible. I use to drive stats with the amps and they sounded great but the difficult load caused what I would term premature tube failure. Once the mods were completed I had no tube failure even when driving the same stats. It has been about 1.5 years since the upgrade and I have not had to replace a tube. The load with the Acapella speakers is much more benign.