Suggestions for a holographic preamp?

I’d strongly recommend considering the Vinnie Rossi Brama preamplifier. It’s an exceptional piece of gear, built around 300B tubes in the output stage with a hybrid topology that allows you to run it fully tube, fully solid-state, or a blend of both—offering remarkable flexibility. This is ultra high-end equipment, unmatched in today’s market in terms of design, craftsmanship, and sonic performance.

Vinnie Rossi, the founder and designer, is a brilliant engineer who stands firmly behind his products. His preamp is known for delivering a stunningly holographic soundstage, with a level of refinement and dimensionality that would complement your MSB and Marten setup beautifully. And since you’re already leaning toward a tube sound, this would give you that lush, spacious presentation while also offering options to tailor the voicing to your taste

@ei001h - Oh, I'm hip to Vinnie Rossi, and I believe every word you say about his Brama preamp, but alas, budget won't permit. Thanks for your suggestion, and you are right about that combo of MSB and Marten. I seldom if ever see an MSB S-200 power amp on the market; those are real keepers. 

No such thing , a preamp. Is a part of the sum.

if buying tube then a 300 B would give you  this

Radu Tarta builds IMO the best high quality  custom preamps  at less then half the Big commercial markup brands with Far superior parts quality and 40+ years 

in vacuum tube engineering . He has built several for me and I  am very picky knowing parts quality and Audio very well decades in this so called hobby 

more of a quest for realism - perfection in music 🎼 music 🎶 !!

This has been my experience.  If pursuing a tube preamp you can significantly change its sonic characteristics by using NOS tubes.  This has allowed me to spend thousands less on the preamp itself and spend $500 on the primary preamp tubes.  These vintage tubes are much better at producing a holographic soundstage than any new production Chinese or Russian they put in today’s preamps.  I have used Brent Jessee to guide me on what matches my preamp but there a few others with experience and a good supply of vintage tubes.

Absolutely agree—I’ve sourced NOS Telefunken tubes for my Luxman phono stage from Brent Jessee, and while they’re certainly expensive, the sonic improvement is undeniable. In my experience, if you’re pursuing a tube preamp, NOS tubes can dramatically shape its sonic character