Ray brought the Nighthawk over yesterday, and we listened to a couple records, and then after he left I fiddled around with it a bit more, to try a few different settings, but I settled on what I originally used. I then just enjoyed a bunch of records for several hours

I liked the sound best with the loading at 100 ohms, and the gain at the second highest (which was PLENTY of gain). In my system, the Nighthawk was very quiet - quieter than my current combo of the tubed Audio Electronics PH1 DJH and Denon step-up transformer.
My complete review will come later, but initial results show the Nighthawk to be an outstanding product. It offers a clear, grain-free, neutral presentation that is never harsh, but is nicely detailed. It was actually pretty amazing that such a small, inexpensive phono preamp can sound so good in the context of my system which includes a pretty high end turntable/cartridge front-end, and high-end electronics and loudspeakers...and the Nighthawk was right at home.
More later - but the Nighthawk is a winner of a product - of this there is no doubt in my mind.