Tests good on our Amplitrex AT1000.
Item Tag: 6057
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Pair of Brimar 6057 Yellow T Black Plate Square Getter 1956 Tubes – 6% matched
Rare pair of early Brimar 6057 tubes. These feature black “half wing” box plates, square getters, and 1956 date codes. Gm matched to 6% difference on the Amplitrex AT1000. Actual manufacturer Brimar.
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Pair of Brimar 6057 (CV4004) Yellow T Gray Box Plate 1961 Tubes – 13% matched
Very scarce pair of Brimar 6057 Yellow T box plate tubes. These feature identical 1961 date codes, gray box plates, and O getters. Perfect balance between the sections within each tube, and Gm matched to about 13% difference on the Amplitrex AT1000.