RCA 6SN7GTB – Vintage Clear Glass / Black Base Single Tube
NOS Condition
Clear Glass
Black Base
Made in USA
Clear Glass
Black Base
Made in USA
Offering a high-quality RCA 6SN7GTB dual triode, Serial No. 1850010. This classic American-made valve features a Clear Glass envelope and a rugged Black Base construction. The “GTB” designation indicates a controlled heater warm-up time, making it a reliable choice for high-fidelity audio applications. This unit is New in Box and has been precisely laboratory tested on the Amplitrex AT1000.
- Type: 6SN7GTB Brand: RCA
- Condition: NOS in Box Construction: Clear Glass / Black Base
- Origin: Made in USA Testing: Amplitrex AT1000
| Sr. No. | Test Triode | Parameter Ip (mAdc) | Result Ip (mAdc) | % Ip (mAdc) | Param Gm (uMhos) | Result Gm (uMhos) | % Gm (uMhos) |
|---|---|---|---|---|---|---|---|
| 1850010 | T1 | 9.0 | 8.4 | 93.3% | 2600 | 2190 | 84.2% |
| T2 | 9.0 | 8.9 | 98.9% | 2600 | 2200 | 84.6% |
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