Douk Audio. Any experience with any of their products?


I've seen several products under this name on eBay in recent history, including a tube preamp board that looks pretty impressive. Especially for the money.   They reference a pretty exotic Audionote preamp in the title.  

Douk Kondo Audionote

I noticed the url on the board, and decided to find out more. Turns out the entire website is blank. Assuming this was an error, I messaged the seller.

"Hi,
I was interested in learning more about the Kondo board, and tried the website to see what info was there, and I get a blank page. Just fyi."

I thought they might appreciate the heads up about the error. Instead, I received this response:
 
"Hi dear customer
wish you have a nice day
the amp board designed by our designers
so you cant find it
best regards
Douk-Amy :)"


Not exactly a confidence builder. I'd be interested to hear if anyone has had direct experience with these folks.
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Thanks for the responses.  Glad to know they make good issues with failed products.  I'm really interested in finding someone who actually bought either a tube kit, or a completed tube amp product from these folks.  While they appear to have some good bargains, especially on the kits and boards, I have yet to find any real reports of experience with them.  


I bought a from Doukaudio a tube 6n11 preamp buffer and I just received the package MUCH sooner than expected and was packed extremely well. I'll be able to give a listen in a day or two. It looks extremely well-built and I'm hoping it sounds as good as it looks! Larger than expected dimensions. Will post a follow-up.
I've had a few things from them and have seen them mentioned in other forums. My overall impression is that they build decent quality stuff with designs as best that they can figure by some of the big names. A small dac that I purchased for my brother was very, very good for like a hundred bucks. I would not count on getting the highest level performance, but I would expect great value for the money. 
I do appreciate the info on ebay feedback.  What I'm really looking for is any experience with the sound of their products.
Last night set up my Dug Mei AV-21 I bought from Doukaudio. (Using as pre-amp on top of my Adcam 5002 amp driving Dynaudio DM2/6 spks.) In a word...superb sound. I bought on Ebay an inexpensive input swicher box (JVC) which I will use between my CDP, tuner, record player and CD recorder. Haven't received this yet. I wanted to get familiar the sound to see how much the sound gets affected. Since the pre/amp, tube buffer is passive I had to turn up the volume. No problem at all. In the first hr. the sound was so-so. I heard the potential...the second hr. the sound blossomed. Unit is larger than expected and build quality appears excellent. Using the stock 12AU7 tubes which came w/the unit and may exchange w/some vintage RCA tubes I have in the future. Overall, too new to comment on long term longevity. But for the little $, quite pleased so far. Doukaudio promptly sent the unit (pack very well) and arrived in perfect condition. Hope this helps....Bill.