Tube tester (curve trace)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 while to upload especially if you are browsing in mobile device.

How to use? Look up the tube ID in 300B-DB sheet. Then go back to 300B-chart sheet and input the tube ID there. If you want to compare only two tubes, you can input “2” for the C and D tube to hide tube C and tube D.