Made in England
GEC 6V6G
Black Coated Glass
Black Base
ST-Shape Glass
New in White Box
Amplitrex AT1000 Tested
Up for sale is a strong matched pair (2 Pcs) of legendary vintage NOS GEC 6V6G beam power tetrodes, complete in white boxes. Manufactured in England by General Electric Co. Ltd. (G.E.C.), these rare tubes feature iconic black-coated glass envelopes and sturdy black bases. World-renowned among audiophiles and guitar amplifier enthusiasts for their lush harmonic richness, tight low-end dynamics, and exquisite soundstage depth.
Both tubes have been thoroughly tested on an Amplitrex AT1000 automated valve tester at full factory operating conditions. Anode current (Ip) and Mutual Conductance (uMhos) measurements alongside percentage performance ratings relative to nominal factory specs are detailed in the table below.
| Serial No. |
Plate Current (Ip) |
Mutual Conductance (uMhos) |
| Ref Spec |
Result |
% Ip |
Ref Spec |
Result |
% uMhos |
| SR.NO. 219026 |
45.0 mA |
45.8 mA |
102% |
4100 uMhos |
3950 uMhos |
96% |
| SR.NO. 219008 |
45.0 mA |
47.9 mA |
106% |
4100 uMhos |
3870 uMhos |
94% |