For Mac48025,
After I reviewed the ZOTL-40 amplifier I bought it and it became my reference amp being driven by the Micro-ZOTL. It's a wonderful piece, like Eric, David Berning is a true genius. I found out recently I like the 40 even more with EL-34's instead of the stock KT-77's. The DI's allowed me to go back to one of my first loves, SET amps, along with experimenting with the 2A3 tube. As you know I'm quite enamored with the Micro-ZOTL preamp with the Triode Lab 2A3 amp driving the DI's and now the Ulf's. This is just based on my personal taste, however, I'm still keeping the ZOTL-40 for my stable of amps because it's great and provides higher power for my reviewing assignments.
For Vitop,
I'm very spoiled in that I have heard just about all the most highly rated speakers either in people's home systems, my house, high-end store settings, or audio shows and to be quite honest I'm starting to come to the conclusion that Ulf's might be the all time best I have ever heard regardless of price! Let me fully burn them in to get all their possible maximum performance. Right now the theme that keeps coming up in my mind is you get all the "pop" of the DI's (with a much more room pressuring foundation to the music) along with a much higher level of "polish" of more pure tonality, soundstage layering with precise location of the players on that stage, and this buttery/liquidity ease of music just felling your room effortlessly.