One SYLVANIA 6BR8A 6FV8A Tube. Very Strong Pentode & Triode from an AMPLITREX Tester. Black Plate on the Pentode. Full Ladder Grey Plate on Triode. NOS NIB Triode/Pentode Tube. Strong EM > Long Tube Life.
One SYLVANIA 6BR8A 6FV8A Tube. Very Strong Pentode & Triode from an AMPLITREX Tester. Black Plate on the Pentode. Full Ladder Grey Plate on Triode. NOS NIB Triode/Pentode Tube. Strong EM > Long Tube Life.