Anyone own Linear Tube Audio Amps?

I own both the Rogers integrated amp (65V-2) and the LTA 40+ integrated. I've had the Rogers for a while and really like it. I saw a chance to buy the LTA 40+ integrated used and jumped on it. It has all the upgrades including the phono stage and SUT. I initially enjoyed the Rogers in triode mode which is maximum tube sound. I started to want more detail and started listening (el34s) in ultralinear mode and that's when I hit paydirt. After getting the LTA, I was initially disappointed because, as posters have said it was more SS like and clinical and did not sound very warm or tube-like. After doing some research, I changed the tubes in the preamp section, 12AU7s getting some nice tubes from Brent Jessee. Boy did that make a huge difference. The LTA came with KT877s and not the EL34s but that works fine. The big difference between the Rogers and the LTA now is that the LTA is faster, more detail and separation. I am hearing stuff in the music I never knew was there including the ability to hear things in complicated passages or where multiple voices or instruments are playing together. The change of the preamp tubes (and I've changed the 12AX7s and I'm going to change the last 12AU7s) really brings in the tube sweetness without giving up the stuff that makes the LTA special. I've had the LTA for about 6 weeks so I couldn't have provided this information earlier, sorry.

as i stated earlier, i have the lta zotl ref power amp, now with the factory parts upgrade mod - i run mullard el34’s and have old stock small signal tubes up front

i think the last poster said it well, i concur

the lta zotl, at its best (with really good tubes in it) gives a kind of 'the best of both worlds' - tube magic bloomy dimensional midrange and holography in imaging, along with the speed and clarity that so much tube amps cannot provide... some will say that this is a negative but more detail and clarity without the attendant negatives of typical solid state (forward character, lack of soundstage depth, overt harshness and sibilance) is a positive, it is what we as listeners seek - to have cake and eat it too

that said, what the zotl does not do, is provide the slam and deep bass iron grip that the best solid state amps provide... so as usual synergistic matching to speakers is essential...

A couple of other things. I have Spatial Audio Labs X5 speakers so the bass isn't an issue for me since the woofers are driven by hypex class D amps. The other thing I forgot to mention which I think is a big difference (beyond the warmth that the EL34s have over the KT77s) between the EL34s and the KT77s is that the KT77s put the vocals up front. It's almost like having a really clear center speaker in a HT set up that puts the dialogue out there front and center. It was a bit jarring at first but it has actually grown on me.

Quick update, I added Psvane EL34s to the mix and I'm really loving it. Hearing things I didn't know were there in the music. 

Older thread, but based on my recent experience I’d love to add my two cents. I purchased the Linear Tube Audio preamp and have had it in my system for about a week. 

Wow… I’ve just been utterly impressed with the unit. The marriage of the solid state details with a tube tone is the perfect description. For me, it’s endgame equipment. Sitting here listening to old recordings feeling like the artists are in my living room. Enthralling.