A double triode. Similar to American designation 5687. Designed as a special quality tube with both an anti-microphonic construction and matched triode sections. Our tubes in stock were made at the Heerlen/Holland factory of Philips/Amperex. The tubes have box plates with top halo getter. All Valvo labeled ones have identical factory code : ID6 Δ3E5. These came in with bulk packaging. The Siemens labeled tubes also have identical code : ID6 Δ3K4.
Quantity in Stock : Out of Stock!
Price : US$66,00/each ; US$135,00/matched pair
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