Jim,
Not exactly all of the target amps but, I have:
Paramour I 2A3 BCP15/ 15708 Altec Lansing 70v line transformers,
Paramour II (I think) 45 BCP15/EXO45 and
Paramount 1.0 300B/6CG7.
The Paramours are slightly warmer than the Paramounts. But, truly, without doing some focused "line them up and compare", my sonic recollection is that driver and power tube changes make more difference in the warmth spectrum than the differences in the amps/iron. Plus, all of my components have paper-in-oil type caps, they tend to sound rounder, warmer. There is also a sprinkling of Teflon and Teflon/tin foil in coupling and bypass roles.
I tend to think of the power tubes as classic, (warm) or modern, (thinner giving the sense of more detail). IMO, old stock and Chinese tubes tend to be classic. European/Slavic tend to be modern. I have Sophia meshplates in 45 and 300B, although Chinese, they are the modern side, to me. The rest of the 45's are OS. 2A3's are old stock, JJ and Sovtek. The JJ 2A3's sound more like a modern 300B than a classic 2A3. (Go figger!) I currently have Shuguang 300B Z Treasure Black Bottles in the Paramounts and I like the overall tone, warmish with good detail. The New Sensor Russian Genelex Gold Lion 300B seems to be more a classic sound, as well, but the jury is still out until I have listened to them more. I can make all of the amps sound warmer, regardless of power tube, changing out the respective driver tubes.
My system is all tube, including a tube buffered CalAudio DAC. My speakers are updated '60's ElectroVoice three way horns with all Alnico drivers, so that is going to have an big influence on the overall voicing. Not much happening above 16KHz or below 50Hz. Alnico magnets also sound warmer, to me, than ferrite and neodymium magnets. You might guess that I like warm and my system reflects that!
Will be really interesting to hear from others!!
Cheers,
Geary
« Last Edit: May 12, 2014, 05:06:52 PM by galyons »
VPI TNT IV/JMW 3D 12+Benz LP-S> Eros + Auralic Aries + ANK Dac 4.1 >Eros TH+ Otari MX5050 IIIB2 > BeePre >Paramount 300B 7N7 > EV Sentry IV-A
Thorens TD124/Ortofon RMG-212/SPU >Seduction > Smash^Up> Paramour 45 MQ >K12's