AMPEREX 12SN7GTA – MATCHED PAIR (2 PCS)
GRADE: PLATINUM SERIES | VINTAGE HOLLAND DUAL TRIODES
Amperex 12SN7GTA
Black Plate
Top Ring Getter
Black Base
New in Original Box
Amplitrex AT1000 Tested
Up for sale is a perfectly matched pair (2 Pcs) of vintage NOS Amperex 12SN7GTA dual triode vacuum tubes, complete in their original Amperex boxes. Manufactured in Holland, these highly coveted valves feature sturdy black plate construction, top ring getters, and black bases. Known for their rich, detailed sound signature, smooth high frequencies, and outstanding linearity, these 12.6V heater equivalents to the classic 6SN7 are fantastic options for high-end audio preamplifiers and driver circuits.
Both tubes have been thoroughly tested on an Amplitrex AT1000 automated valve tester at nominal factory specs. Anode current (Ip) and Mutual Conductance (uMhos) measurements alongside percentage performance ratings relative to standard specs are detailed in the table below.
| Serial No. | Triode Section | Plate Current (Ip) | Mutual Conductance (uMhos) | ||||
|---|---|---|---|---|---|---|---|
| Ref Spec | Result | % Ip | Ref Spec | Result | % uMhos | ||
| SR.NO. 2349001 | T1 | 9.0 mA | 9.6 mA | 107% | 2600 uMhos | 2600 uMhos | 100% |
| T2 | 9.0 mA | 10.0 mA | 111% | 2600 uMhos | 2700 uMhos | 104% | |
| SR.NO. 2349008 | T1 | 9.0 mA | 9.6 mA | 107% | 2600 uMhos | 2600 uMhos | 100% |
| T2 | 9.0 mA | 10.0 mA | 111% | 2600 uMhos | 2700 uMhos | 104% | |
Technical Note: Custom duties and taxes are the responsibility of the buyer in their country.
Reviews
There are no reviews yet