What are your questions? I have had the Lampi Pacific and Horizon. The build quality on each was extremely good. Tube rolling is not necessary but everyone does it. It is fun to change tubes to find your sweet spot. Once you find it, you usually stick with it. If you really want to read about Lampizator, goto What's Best Forum. There are probably 30 threads on different Lampi products under the digital section. BTW, I have had at least 7 DACs in the last ten years and Lampizator is the best DAC I have owned,
