Siemens CCa *SM* (6922) Germany - Gold Pin Box Plate Tubes - Matched Pair

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This listing is for a matched pair of Siemens CCa tubes.

These tubes would be well suited for gain stages in preamplifiers or phono stages.

This is an upgraded version of the 6922 featuring gold pins and box plates.

These tubes were each tested on our calibrated modern and professional tube tester (Amplitrex AT1000), and test close to original NOS (New Old Stock) spec with great microphonic performance.

They do not have perfect triode balance but are very closely matched to one another.

Emission within 2% and Gm within 6%.

AT100 Results:
Format: Emission % of NOS / Gm % of NOS

Tube 1:
Triode 1 - 89 / 96
Triode 2 - 96 / 98

Tube 2:
Triode 1 - 89 / 103
Triode 2 - 98 / 100