Nanking 6V6GT. Laboratory testing conducted viaAmplitrex AT1000. Result Gm uMhos.
1x 1970s 6V6GT NANKING Bottom Square Getter Made in China Amplitrex Tested Tube
Nanking 6V6GT. Laboratory testing conducted viaAmplitrex AT1000. Precision Verified — NOS Audio Tubes. Result Gm uMhos.
5691 Mullard made in England Amplitrex AT1000 Tested Qty 1 Pc
Tested Advance Digital Tube Tester Amplitrex AT1000. Amplitrex AT1000 Advance Digital Tube Tester, Hickok 752a tube tester, AVO Type 160. AT1000 Tested Qty 1 Pc. 5691 Mullard “Leaf” Getter made in England Amplitrex.
Vintage RCA 5691 Vacuum Electron Tube Made In USA H41
Vintage RCA 5691 Vacuum Electron Tube Made In USA H41 USED Letters are faded but it’s an RCA
Vintage RCA 5691 Vacuum Electron Tube Made In USA H42
Vintage RCA 5691 Vacuum Electron Tube Made In USA H41 USED
Vintage General Electric GE 5691 Vacuum Electron Tube Made In USA H4
Vintage General Electric GE 5691 Vacuum Electron Tube Made In USA H4 USED
Vintage RCA 5691 Vacuum Electron Tube Made In USA i5
Vintage RCA 5691 Vacuum Electron Tube Made In USA i5 USED