http://www.little-tube.com is the webpage for the Little Dot line. It's really just a forum. It'd be nice if they had product pages with info, but they don't. There is a lot of useful info in the forums, but you have to dig a bit.
These things are unabashedly made in China. And yes, you buy them on fleabay. Just be sure you buy from
davidzhezhe. He's the official seller. From my experience he is a good guy. I was *extremely* leery in ordering something directly from China. I had done a lot of research to make sure it was legit, but I was still nervous. But I was pleasantly surprised at how uneventful the experience was. Ordered. Shipped. Delivered.
David answered all of my questions very promptly and honestly, and even followed up a couple of weeks later to make sure I was enjoying the amp. We've had several email conversations since then about tube rolling and such. So I'd recommend you email him if you have any specific questions (differences between MK1 vs MK2, etc). Honestly, it was one of the better eBay experiences I've ever had. The shipping was expensive ($40), but I've had stuff shipped from 90 miles away that took longer than that amp did from Shenzou, China. I had it within about 4 days.
$200 felt like (and is, to most 'normal' people) a lot of money for a headphone amp, but I am quite pleased with the results and would do it again if something happened to this amp.
The best place for comparisons and unbiased discussion would probably be the head-fi amplifier forums. There are a few threads dedicated to the Little Dot line.
http://www.head-fi.org/forums/f5/
