Recommendations for an Amp/Preamp combo excellent musically and very reliable

@sls883 I think it’s fair for you to say that you like the Wotan as well as the Coda No 8 in your system with your speakers, but I don’t think you can definitively say that it’s as good in any system. 

The context of my statement was the Magnepan LRS+ and the Mini (which is the same driver as the OP’s speaker). In this context I like the Wotan over the Sanders Magtech because the Wotan has more bass and almost as clean top end. The CODA #8 is very similar sonically to the Wotan from my audio memory. I do not think I had the #8 when I had Maggies. However, I have the #16 now and I can extrapolate the sound to my old #8.

The CODA #16 is the best overall amp I have owned It is almost as clean top as the Benchmark AHB2, similar bass (or more bass) as the Wotan, and a beautiful Class A tone like the KRELL Duo 175XD. I owned all of these amps before.  

I put the Sanders, CODA #8, and the Wotan about the same level of performance with the Maggies, which are hard to drive.

My suggestion to people is to give the Wotan a home trial and maybe have a lot more funds for other gear. I needed 30 days of hard playing before the top end cleaned up on the Wotan.

I will toss out Audionet for consideration. I had a Coda #8 and Pass XP12 that I loved, but took a chance on a G2 Pre and Amp1, and did not look back. Nothing bad to say about Coda/Pass, I could still love that combo, but Audionet has been a great fit for me.

I'll throw in mention of Hegel.  My system is the Hegel H360 to Sopra 2 speakers with a pair of REL low frequency drivers.  (REL doesn't like to call them "subs").  Electrons come from a Synergistic Research 12UEF.  Good cables throughout.  The internal Hegel DAC is bypassed and the digital signal is processed by a Holo May.  I find the system to be clean, airy, resolving, tight articulate bass.  And the extremely important mid and lower-mid range has warmth and fullness but is not over expressed, which suits my personal preference.  Overall the Hegel+system creates a palpable soundstage with at times very beguiling presence.  My room is terrible, btw.  Like, terrible.  But the future holds promise.  Also, if anyone is using a Holo May and your phase lock loop (PLL) is off, please try with it turned on.  It was a PITA to figure out an it causes an initial delay of anywhere from about 1-10 seconds when switching or turning on sources, but the improvement in sound can be dramatic.  At least it was in my case.

mllc

Definitely a tube preamp with a solid state amplifier, would be exactly what you are asking for. For disclosure I own a CODA S5.5 amplifier paired with an Aric Audio Motherlode XL preamp......everything I could ever want

Preaamps - Aric Audio Motherlode II $5,750 (RCA jacks only) or Motherlode XL $6,875 (RCA and fully balanced XLR), Don Sachs/Lynn Olson Raven preamp $6,395, Backert Labs Rhumba Extreme 1.4 $8,500, Supratek 6SN7 Cabernet $4,500 or Grange $6,500 (though Supratek is shipped from Australia.....tariffs?"

Solid state amps - Coda #8 $6,800 or #16 $17,500 for sure would be my first choice......Pass Labs X250.8 $11,500, Sanders Magtech $12,000 would be second for me. The CODA S5.5 is a supremely talented high current amplifier, but probably would not be a good mix for your speakers. Obviously there is more expensive gear you could buy that would fit the bill as well.

@mllc , what you describe certainly sounds like a SS amp paired with a tube Pre is what you need, as many prior postings have picked up on.

My amp recommendation is easy = CODA.

Many fine tube preamps have already been mentioned (Allnic - Aric Audio - Backert Labs - Conrad Johnson - Don Sachs - Linear Tube Audio & Spatial Audio), along with a few that have not been mentioned, such as BAT or Herron Audio. So, this is where you must decide which one offers the best combination of price - performance - looks - etc.

Good luck in your search!