I am a noob audiophile. I was wanting to know what brands of tube headphone amplifiers are Japanese designed/engineered/made (if there are any at all) either modern or vintage commonly available here in the United States? And also what is the consensus about any of these Japanese brands?
Also; I noticed that the Chinese make some new modern tube headphone amplifiers through a brand called "Qinpu". What is the general consensus of these brands of modern tube amps? Are there any other Chinese designed/engineered/made headphone tube amps either vintage or modern other than this brand commonly available here in the U.S.?