RSD ECC81 / 12AT7 — Vintage Matched Pair
Grade: Gold Series
Laboratory Verified
Top Ring Getter
Laboratory Verified
Top Ring Getter
Top Ring Getter
Matched Pair (2 Pcs)
ECC81 / 12AT7 Family
Amplitrex AT1000 Verified
Matched Pair (2 Pcs)
ECC81 / 12AT7 Family
Amplitrex AT1000 Verified
Offering a precision matched pair (2 pieces) of authentic vintage RSD ECC81 / 12AT7 vacuum tubes. These premium specimens feature the classic Top Ring Getter construction and are known for their reliable performance and balanced sonic output.
Characterized on the professional Amplitrex AT1000 analyzer, this pair exhibits strong emission and excellent section-to-section consistency. Ideal for high-fidelity audio equipment, preamplifiers, and driver circuits.
| Serial No. | Triode Section | Parameter Ip mAdc | Result Ip mAdc | % Ip | Parameter Gm uMhos | Result Gm uMhos | % Gm |
|---|---|---|---|---|---|---|---|
| #2115001 | Section 1 (T1) | 10.0 | 10.6 | 106% | 5500 | 5600 | 101.8% |
| Section 2 (T2) | 10.0 | 10.2 | 102% | 5500 | 5300 | 96.3% | |
| #2115002 | Section 1 (T1) | 10.0 | 8.4 | 84% | 5500 | 4660 | 84.7% |
| Section 2 (T2) | 10.0 | 10.0 | 100% | 5500 | 5320 | 96.7% |
Technical Note: Percentage calculations are based on Amplitrex factory standard parameters for the ECC81 family (Ip= 10.0mA, Gm = 5,500 uMhos).
Matching Data: Measurements include Mu (Gain) and Plate Resistance (RP) for precision application.
Email: [email protected]
Precision Verified — NOS Audio Tubes
![Lot 100pcs.NOS NIB 7193 [2C22] RCA Made In U.S.A. Black Rods Support](https://i0.wp.com/www.nosaudiotubes.com/wp-content/uploads/2023/01/7193-03.jpg?resize=250%2C188&ssl=1)
Reviews
There are no reviews yet