Surprised you never heard of Lampizator Charles.
We are a young (appox a 6 yr old) company that specialize in hi-end tube audio gear manufactured in Poland. We also sponsor a circle on AC for a couple of years now. We do display our wares at the USA audio shows around the country and there are plenty of reviews online as well.
Being the co-distro for Lampizator I sent Junepy a PM. We do have several customers in the Cali area that could help us arrange a demo as well. Hearing it in your rig and in your room is really the litmus test. We do offer a demo period, if you're not happy, you simply return for a refund minus shipping. No re-stocking BS. We're audiophiles at Lampziator, so we try to be as accommodating as possible. 5yr transferable warrantied. Trade ups offered on old DACs whether orig owner or not. Cost effective upgrade to keep your DAC current.
Feel free to contact me (Rob) or my partner Gopher (Fred) if you have any questions or concerns. Thx!