Grannhyring, just to give you some context, my view of the Lightspeed is as a current and former owner of several highly regarded tube amps from Lamm,ARC.Joule, CAT, and Atma-sphere. Not that it proves anything, but I would not like this thing if it was in the least bit small, sterile and thin relative to anything. If the tube pres I have owned, and still own, are not the very best, they are close. The fact that this thing is $450 can hurt it for those use to 10K preamps.
Alas, it is not for everyone with its one single-ended, single input, but this thing does not sound like any of the stereotypes of passives, it has the signature of clean water, letting the source connect to the amp with minimal interference, without loss of any apparent bandwidth, or dynamics. It is not a bandaid preamp that will fix whatever isn't quite right or to once's taste in the rest of the system. A great source with a great amp and speakers are where this preamp will work best, even in the company of $$$$ components before it or after it. My feeling has always been that the preamp should be as neutral as possible with the coloration one prefers coming elsewhere in the system - making it more universally easier to use in many different system contexts.
I hope this unit is used by someone at RMAF so everyone can actually hear it and decide for themselves if it provides the type of sound they can be happy with. It would be nice if there were a 30-day trial, but I'm not sure if the low price and the long-distance transportation would make that viable - it is certainly light enough to ship around.