The product is a rare vintage Mullard ECC83/12AX7 tube from 1965, made in Blackburn, England. This IEC tube features a strong halo getter and is highly sought after by collectors and vintage audio enthusiasts. Known for its superior quality and unique characteristics, the Mullard ECC83 is a valuable and prized commodity in the vintage electronics market. Excellent guitar amp tube. This tube tested as follows: Triode one-77/100 Triode two-86/100 Tested on a Precision 10-12 tester.
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