The Mesa 400/400+ are definitely in the competition. While discontinued, there are quite a few of them around and I'd bet there is nearly always one available in our classifieds here.
As to where all the current manufacturers are, they cannot really compete in the modern market. This is the downfall of economies of scale: very few people (in the market sense) are interested in an all tube head, so very few companies see money in it. Ampeg, Peavy, Behringer/Bugera (shudder), Fender and Eden all market their tube amps still so far as I know; which leaves a very competitive market for anyone interested in entering the foray with anything new. We do have alot of posters here arguing the case for tube amps; but this is an eclectic group of bass/gear nuts. The general spending public (AKA the only thing big companies consider) is interested in something completely different from whats right.
As to where all the current manufacturers are, they cannot really compete in the modern market. This is the downfall of economies of scale: very few people (in the market sense) are interested in an all tube head, so very few companies see money in it. Ampeg, Peavy, Behringer/Bugera (shudder), Fender and Eden all market their tube amps still so far as I know; which leaves a very competitive market for anyone interested in entering the foray with anything new. We do have alot of posters here arguing the case for tube amps; but this is an eclectic group of bass/gear nuts. The general spending public (AKA the only thing big companies consider) is interested in something completely different from whats right.
