This B&K 707 Tube Tester is a mutual conductance tester that has been restored and calibrated. The B&K 707 Tube Tester is good for overall tube testing. I like this
B&K Tube Testers
This B&K 707 Tube Tester is a mutual conductance tester that has been restored and calibrated. The B&K 707 Tube Tester is good for overall tube testing. I like this