Inexpensive Tube Amps

OP, the three components you had listed, it looks like the first and the third one are the same amplifier just rebranded. If it were me, I'd go with the one of those two since they seem to have less moving parts to go wrong. By the way, I also bought a Yaqin A3 on a whim a year or so ago and it lives in my office driving a pair of small bookshelf speakers. It sounds OK for the $130 that I paid for it but it is not a proper representative of what a tube amplifier can and should sound like. And yes its 8.5wpc can drive medium efficiency speakers - I tried it with my Vandersteen 2Ci for giggles and music came out but it is nowhere near the sound quality that comes out of those speakers when fed properly.    

Will i too sense your frustration as Roxy54 described. Things do have a tendency to go off the rails a bit when inquiring on a budget Chinese product at such a reasonable price. I would only add these points in assessing whether or not to consider these products. Do you know a technician that can go over the amp prior to firing it up? Can you afford to send it back, presumably on your dime if it doesn't work out? What is the absolute limit of your budget, can you afford the risk if something bad happens beyond the amp? 

The point is that there are going to be compromises beyond labor and lack of regulatory requirements in China. I would try one if i could afford it failing without too much expectation that it could be returned back to China. Sure they may replace broken parts but good luck returning and expecting a full refund. If it were me and i were in your situation i would seriously consider a used tube design from an established manufacturer at the limit of what you are willing to pay. At least you will be able to resell with little if any monetary loss. One can read the on line reviews and conclude all is wonderful in paradise but at THOSE prices paradise may be too much of a bargin or in your case risk. You have received several excellent recommendations on some mainstream  manufacturers and you seem very thoughtful in processing. Good luck! 

tubegroover.  Most likely I will buy from Amazon.  Or perhaps the Paradise model which is also a North American based company.

Again, those prices would be considerably higher if the products were manufactured here.  Since the companies in China are still around and selling these, knowing how the free market system works, they likely are making better products now than a decade ago.  If they sent out a lot of junk, they would go out of business.  

kalali. Thanks. Yeah, I am leaning towards what you suggested. The tubes are excellent from what I’ve read and they are easy to roll if necessary.

My A3 did drive my OM 10’s very well. They are 6 ohm and 91 db sensitivity. The Castle Conway 3’s were OK with that amp but I now have them paired with my old Yamaha A500 amp and there they shall stay. I bet the OM 10’s will be great with one of these little tube amps.

Wish I could biwire though.  The OM 10's really shine when bewired.  But will likely be more than happy with the sound of the tubes with them.

@will62 

keep riding the merry go round........