Matched Pair MULLARD ECC81 Ecc801 NOS gray Plates O Getter 12AT7 Audio Tubes

Tubes test NOS. Tv7 tested TUBES. All our tubes have been tested for. It can be wiped off and destroyed VERY easily. special checking. This test needs sound amplification; hearing listening to noise with headphones would indicate a real disaster inside a tube (THE shorts test WOULD already BE evidence OF THIS).

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