Quad Matched Set JJ Electronic EL34 / 6CA7 Audio Output Valves - Part # QD-EL34JJ
Tube Amp Doctor Premium Matched Quad Set of 6L6GC Audio Output Valves - Part # RT104
Tungsol Quad Matched Set of EL34 Audio Output Valves - Part # QD-EL34B-TUN
Tungsol Matched Pair of EL34 Audio Output Valves - Part # EL34B-TUN
Svetlana Platinum KT88 Audio Output Valve - Part # KT88SV
Sovtek 6L6WGC / 5881 Classic Audio Output Valve - Part # 6L6WGC
Tung-Sol KT66 / 6L6GC Classic Audio Output Valve - Part # KT66TUN
Svetlana Platinum Matched Pair of KT88 Audio Output Valves - Part # KT88SVPL
Svetlana Platinum Matched Quad Set EL34 Audio Output Valves - Part # QDEL34SVPL
Svetlana Platinum Matched Pair of 6L6GC Audio Output Valves - Part # 6L6GCSVPL
