DYNACO NOS RCA 7199 BLACK PLATE TUBE AMPLITREX TESTED
For Dynaco and other Amplifiers. RCA 7199 Tube. It also was tested on Amplitrex AT1000. Amplitrex- Emissions 80% / 83%. Years ago, I put away a bunch of great Tubes. This tube tests at. Black Plate with Halo Getter.