Matched Pair Sylvania 6LB6 Beam Power Amp Vacuum Tube Tests NOS on TV-7U
Matched Pair Sylvania 6LB6 Beam Power Pentode Vacuum Tubes. Both test as NOS at 98 & 96 with 54 being the minimum score for a good tube (with 65% of life re maining).
Matched Pair Sylvania 6LB6 Beam Power Pentode Vacuum Tubes. Both test as NOS at 98 & 96 with 54 being the minimum score for a good tube (with 65% of life re maining).