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RSD ECC81 / 12AT7 Top Ring Getter Amplitrex Tested Qty 2 Pcs

$81.00

Up For Sale 2 Pcs

Tube: RSD ECC81 / 12AT7

Price: $81

Shipping Charges: $40

✉️ For bulk or quantity requirements, feel free to Email us at
[email protected]

Availability: 2 in stock

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RSD ECC81 / 12AT7 — Vintage Matched Pair

Grade: Gold Series
Laboratory Verified
Top Ring Getter
Top Ring Getter
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.

Precision Verified — NOS Audio Tubes

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