I think I have found the End Game Amp

@lumakuu @posbwp55 Much of my listening is chamber music and choral works where "bass slam" and other artifacts requiring power are not relevant.  The usual max spl of those genres is 90dB or less and the 14 watts are fully capable of doing that.

Even listening to the opening of the last movement of Mahler 7, timpani going wild, is rendered cleanly and satisfactorily, though at less than real life volume.

The Atria IIs have a sonic character that no high efficiency speaker can match - thin paper cones, horns etc. color the sound.  I will trade off the slam and volume for the sheer beauty, delicacy and elegance that the Triode Lab PP 2A3 and Atria ii speakers yield.

I have tried a variety of pre amp & power amp combinations over the last two years and the current setup, though perhaps unconventional, is yielding the best sound, based on my desired qualities and music preferences.  I realize that the setup is "at the margin", SE 2A3s and 300Bs did not quite handle orchestral works.  Solid State was not beautiful, powerful PP tubes (KT 120s) sounded good (indeed the C-J amp was very good) but did not quite have the magic of superbly executed PP 2A3; yes, Mahler's timpani had more slam but the beauty of the human voice, and the sense of space, in liturgical works, was not quite there.

I appreciate your comments but I think my listening preferences may be somewhat unusual.

Retired audio guy,

 I recently read an article concerning dynamic range and calculating amplifier power necessary to drive speakers. It was written by Tom Martin 7/9/2026 for The Absolute Sound. If I could figure out how to link it here I would. You should be able to find it easily. It is titled “Dynamic Range and choosing Amplifier Power”. Regardless of whether your amp can drive those speakers, if you enjoy them and they are not doing any damage by clipping, that’s all that matters. Enjoy.

Everything I play sounds - I am not sure of the word - but "right" seems to fit.  I have played everything, from Angela Hewitt's Goldbergs - you can clearly her management of tone from her Fazioli piano - to Simon Rattle's Mahler 7 (Bavarian Rundfunk).  Also the Borodin recording of Shostakovitch quartet 9, the Beethoven op.132, the Sveshnikov Rachmaninov Vespers with Klara Korkan's haunting mezzo, Hilary Hahn playing Bach.  AMAZING!

Yeah, I should really start listening to more classical. Been mainly jazz 70% of the time, but there is whole world of recordings to listen to, all at my fingertips, and I gravitate to the same 1000 albums. 

2A3 not the best pair up with those inefficient Rockports

There is a misconception that all amplifiers given a tube spec are the same, and that makes as much sense as saying all 50 wpc solid state amplifiers are the same. The quality of the power supply makes more of a difference. Similar to when someone comments that all 300b amps have poor wooly bass, they obviously have not heard a good 300b amp. 

I fondly recall giggling like a small child the first time I felt my walls shaking from my 4.2 wpc 2a3 amp (98db efficient 4 ohm speakers). I am pretty sure my 100 class A watts per channel Coda 15.5+ does not shake them any harder. 

I have tried a variety of pre amp & power amp combinations over the last two years and the current setup, though perhaps unconventional, is yielding the best sound, based on my desired qualities and music preferences.  I realize that the setup is "at the margin", SE 2A3s and 300Bs did not quite handle orchestral works.  Solid State was not beautiful, powerful PP tubes (KT 120s) sounded good (indeed the C-J amp was very good) but did not quite have the magic of superbly executed PP 2A3; yes, Mahler’s timpani had more slam but the beauty of the human voice, and the sense of space, in liturgical works, was not quite there.

Proof is in the pudding. You know when you know. 

@posbwp55 Thanks for the article.  I read it through and it seems to (just) validate what I hear on theoretical grounds.

I mentioned that I measured the SPL at my listening position at 84dB with 2 watts (2.83v).  14 watts yields an additional 8.45 watts (theory) and in practice 92 dB is about my comfortable peak for orchestral stuff.

At the bottom end pp passages are at 65db, do a dynamic range of 27dB - in line with the article's 26 dB range.

So, yes, the power is marginal at the upper limit but the SQ in the middle is sublime.

@mclinnguy No, I cannot shake the walls at 92 dB, but I live in a log home and it would take a bulldozer to move them anyway!

Most of the time I am listening in the mid 70dB range - .5 watts.

Regarding "wooly bass" and 300B amps, for many years I had a VAC Ren 70/70, driving Audio Physic Virgo IIIs.  Than could do excellent bass!