NOS NIB GE 6201 JG-12AT7WA Triple Mica Black Plate Low Noise Preamp Tube CV455
Listening tested for excessive noise and microphonics in a Maxi-preamp 2 noise tester. Tests 1886/1714 where most NOS tubes test 1700+ in a Maxi-preamp 2 at 200 volts. We cannot be responsible for what tubes test in another tester.