Hi Charlies,
Please remember that I just ran the experiment of driving the Triode Lab SET 2A3 amplifier with a very good tube based preamplifier through the Ulf's and this combo was very good, but did not have the ultimate magic of the combo of the Micro-ZOTL/2A3. Yes, for me the 2A3 tube is even more natural/musical then my old favorite 300B. However, the Micro-ZOTL adds the overall kick/dynamics, pure tonality and 3D imaging and the 2A3 adds the colors and even more air and space between players. One more time, on either the DI's or Ulf's, regardless of the type of music, I can shake the walls and pressurize my very large acoustic with ease.
Please remember that I just ran the experiment of driving the Triode Lab SET 2A3 amplifier with a very good tube based preamplifier through the Ulf's and this combo was very good, but did not have the ultimate magic of the combo of the Micro-ZOTL/2A3. Yes, for me the 2A3 tube is even more natural/musical then my old favorite 300B. However, the Micro-ZOTL adds the overall kick/dynamics, pure tonality and 3D imaging and the 2A3 adds the colors and even more air and space between players. One more time, on either the DI's or Ulf's, regardless of the type of music, I can shake the walls and pressurize my very large acoustic with ease.