Looking at these specific preamps give me your opinions

I have a LTA MicroZOTL preamp.  I had two different conrad-johnson preamps before that.  I'm using it with single ended interconnects to a Coda solid state amplifier.  I'm very happy with it.  I thought I'd miss the warmth of the cj preamps, but I really don't. I feel that it's better than the cj. 

I just figured out recently that LTA uses technology from berning and Steve McCormack with SMC helps design berning amps. So 3 of the 4 on the list are related in some way.

Really depends on what sound characteristics you’re looking for.  That said, I also have a fully modded DNA 0.5 and I’d do a trial of the Raven without a doubt, but that’s me.

Knowing the story behind it and the people involved with the design and implementation I would most certainly look into the Revelation Raven. My suspicion is that it's truly superb.

Charles

Backert Labs, it’s been the preamp of my dreams! The love affair continues. It’s quiet, detailed and though neutral, there is real magic in how it has made my 300B’s sound with O96’s. You can’t beat it!