Yes, baranyi (Bob) is correct regarding my personal favorites, here's a few more details:
1) AS I have stated before on this thread the combination of the LTA Micro-ZOTL and the Triode Labs SET 2A3 is my reference for either the DI's or the SE's. When I ran the experiment of driving the 2A3 with other preamps it became to "slow" and lost the speed/kick/dynamics that the Micro-ZOTL provides. But, the combo/synergy between the two is heavenly on the DI's/SE's.
2) However, on the Ulfberht's this combo still provided the beautiful tonality/timbres and "meat on the bone" 3D imaging, but the speakers themselves did not quite disappear in the sound-stage as the DI's did with this combo. However, with the Micro-ZOTL and Aric's SET KT-88 on the Ulf's these big monsters completely vanish like there smaller siblings.
3) Yes, I give up a very slight "romance/intimacy" in the mid-range, however, it's still very beautiful and then you get more precise imaging and as I mentioned the Ulf's do the disappearing act. My hunch is that its not the wattage between the two amps or the type of tubes, but that Aric's amp drops more current then the 2A3 amp which controls the Ulf's better. Remember the Ulf's are slightly more efficient then the DI's, so there not more power hungry,but there a lot more transducers to drive (total of 21).
1) AS I have stated before on this thread the combination of the LTA Micro-ZOTL and the Triode Labs SET 2A3 is my reference for either the DI's or the SE's. When I ran the experiment of driving the 2A3 with other preamps it became to "slow" and lost the speed/kick/dynamics that the Micro-ZOTL provides. But, the combo/synergy between the two is heavenly on the DI's/SE's.
2) However, on the Ulfberht's this combo still provided the beautiful tonality/timbres and "meat on the bone" 3D imaging, but the speakers themselves did not quite disappear in the sound-stage as the DI's did with this combo. However, with the Micro-ZOTL and Aric's SET KT-88 on the Ulf's these big monsters completely vanish like there smaller siblings.
3) Yes, I give up a very slight "romance/intimacy" in the mid-range, however, it's still very beautiful and then you get more precise imaging and as I mentioned the Ulf's do the disappearing act. My hunch is that its not the wattage between the two amps or the type of tubes, but that Aric's amp drops more current then the 2A3 amp which controls the Ulf's better. Remember the Ulf's are slightly more efficient then the DI's, so there not more power hungry,but there a lot more transducers to drive (total of 21).