Inexpensive Tube Amps

I don’t know anything about those, but like my father always said "if you buy cheap, you get cheap". I would save your money and pick up a used pair of mono blocks from a reputable dealer. Look into american made QuickSilver. www.quicksilveraudio.com I have circa 1990’s M60’s - 60 Watt Mono blocks that I love. Bought them a few years back. good luck.  If you are in NJ, go see (or call) Johnny at Audio Connection.  http://www.audioconnect.com/   He is a wealth of knowledge

@will62 no need to get angry with people trying to help you.  I went back and re-read all the posts and pretty great consensus on Quicksilver as well as some awesome advice that you should heed.  Not seeing anyone really recommending that stuff, but you seem hell-bent on probably spending the same that you would on a quality used pair to buy some new Chinese junk.  Have at it brother.  They'll probably be back on here for sale at some point.  Listen to @tonydennison.  he knows what he's talking about

" I want to try one just to see how the sound compares to my Yamaha and Denon solid states."

the nobsound will sonically blow away your solid state gear, if you have very efficient speakers. If not these SE amps will run out of headroom pretty fast.

Also need to remember the Chinese amp manufacturers have come a long way in the last 112 years. I tied some of the earliest Chinese models that did not work right out of the box. Had to redo a few solder connections before they would work.

If you look beyond the SE amps, the music angel amps offer more power and sound really good, even better if you hot rod them with better parts.   

If you are looking for pure value, the best value in Chinese amps are the RFTLYS brand. Its amazing what they offer for 400 bucks.

If you are looking to just try one of these inexpensive amps out, just make sure your speakers are easy to drive before you buy, otherwise you will not be happy.

If you buy the cheap Chinese garbage, make sure your house has good fire insurance.

I have a Line Magnetic integrated amp that is made in China. I also borrowed a SET amp from the same company that really got hot. I think this is a good company, but I would be very concerned about the safety of much cheaper budget amps. There are some companies that have oversight and quality control but they are few and far between in China. I had read a couple of articles about workers swapping parts and the inferior parts goes into an amp, the quality parts gets stolen to be resold later.
You can go super budget, but for anyone offering safety advice, like myself, I would take heed????