The amp sounds great so far. Assuming it will get better with age...
I am running Klipsch KLF-20 (100 dB/W/m) speakers. I only need to run at 1/2 volume to fill the room.
I found two sets of 45 ballon tubes for $160. Radiotron UX-245 and Cunningham CX-345.
I made the following mods as I built the amp.
(1) Replaced coupling capacitors with Sonicraft caps.
(2) Replaced the parafeed caps with 4.7 uF Mundorf Supreme's
(3) Replaced the stock pot with an Alps Velvet pot.
(4) Added a 120V neon indicator lamp.
I had the aluminum faceplate and transformer bell powder coated in satin back. Well worth the $25.
The kit went together very easily because of the great manual.
Paul