Poultrygeist most things Chinese are not known for their quality it is mostly what you can get for the money. If tubes interest you and money is an object and as all of us know American,British, and German tube preamps and amps usually cost a whole lot more than we are talking about here and that is by a long shot so the Chinese do have a market in cheap to buy tube gear but the trade off is the reliability and warranty are questionable and usually they are knockoffs of earlier American or Japanese tube designs.