We curve trace test each TJ Fullmusic tube by our Amplitrex AT1000 tube tester. Results are exported to a spreadsheet for comparison and matching. Below is a interactive sheet to show the curve and test result of each tube. You can check the test reports before you place your order. The graph will take a […]
tube-matching Do you want a perfect matched-pair or a perfect matched-quad? Does your amp need tubes within a certain bias arrange or plate current range? Get what you need. Check the test results and the curves before buying. Quote the tube number when you place an order. We will serve it for you but it’s […]
Which 300B is the best? TJ 300B won the game. “Sonically this valve was a revelation… It offers that clarity, directness and openness I know from my 45’s but adds power and even more resolution. I love it. The tonal balance is very even-handed, the soundstage is ridiculously extended and opened up. Detail, especially these little background things […]
FACTORY BACKGROUND The TJ factory in Tianjan province manufactures WE replicas with a few interesting and creative variations. 300B tubes are available as ST or Globe style with the Globe offering both solid and mesh-style (perforated) anode. The factory is a private enterprise (no state involvement) and the owner, Mr. Liu is a veteran of […]