Both tested NOS and matched using an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1 85% ip 97% gm Tube 2- 82% ip 97% gm
Both tested NOS and matched using an Amplitrex AT1000 tube tester with the following results (as photographed): Tube 1 85% ip 97% gm Tube 2- 82% ip 97% gm