{"product_id":"matsushita-6x4","title":"Matsushita 6X4","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:ff0211d1-279f-4d20-8a48-9503e4722f68-1\" data-is-intersecting=\"true\"\u003e\n\u003cdiv class=\"relative w-full overflow-visible\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:ff0211d1-279f-4d20-8a48-9503e4722f68-1\" data-turn-id-container=\"request-WEB:ff0211d1-279f-4d20-8a48-9503e4722f68-1\" data-testid=\"conversation-turn-4\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"d0ec1346-7d53-4c64-b318-2e2b946ed7c8\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5-5-thinking\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003ch2 data-section-id=\"1r17dag\" data-start=\"0\" data-end=\"39\"\u003eMatsushita 6X4 \/ EZ90 Vintage NOS Rectifier Tube\u003c\/h2\u003e\n\u003cp data-start=\"41\" data-end=\"350\"\u003eThe \u003cstrong data-start=\"45\" data-end=\"63\"\u003eMatsushita 6X4\u003c\/strong\u003e is a vintage Japanese-made \u003cstrong data-start=\"91\" data-end=\"119\"\u003efull-wave rectifier tube\u003c\/strong\u003e used in compact power supplies. Also known by the European type \u003cstrong data-start=\"184\" data-end=\"192\"\u003eEZ90\u003c\/strong\u003e, the 6X4 was commonly found in vintage radios, small hi-fi components, test equipment, and other tube electronics that needed a reliable miniature rectifier.\u003c\/p\u003e\n\u003cp data-start=\"352\" data-end=\"679\"\u003eMatsushita tubes are well respected because many were made with strong Japanese manufacturing standards and tooling influenced by major European tube makers. For anyone restoring vintage equipment, a Matsushita 6X4 is a great way to keep the circuit vintage-correct while avoiding the inconsistency of many modern replacements.\u003c\/p\u003e\n\u003cp data-start=\"681\" data-end=\"1011\"\u003eThe 6X4 uses a \u003cstrong data-start=\"696\" data-end=\"720\"\u003e7-pin miniature base\u003c\/strong\u003e and a \u003cstrong data-start=\"727\" data-end=\"742\"\u003e6.3V heater\u003c\/strong\u003e. It is not an audio gain tube, so it will not “color” your sound the way a 12AX7 or 6SN7 might. Instead, its job is to convert AC voltage into DC voltage for the power supply. A good vintage rectifier can help keep older gear operating properly, quietly, and reliably.\u003c\/p\u003e\n\u003ch3 data-section-id=\"g3460r\" data-start=\"1013\" data-end=\"1028\"\u003eCommon Uses\u003c\/h3\u003e\n\u003cul data-start=\"1030\" data-end=\"1203\"\u003e\n\u003cli data-section-id=\"1jq47ov\" data-start=\"1030\" data-end=\"1059\"\u003eVintage radio restoration\u003c\/li\u003e\n\u003cli data-section-id=\"ffpp6t\" data-start=\"1060\" data-end=\"1098\"\u003eSmall hi-fi amplifiers and preamps\u003c\/li\u003e\n\u003cli data-section-id=\"10q8z76\" data-start=\"1099\" data-end=\"1122\"\u003eTube test equipment\u003c\/li\u003e\n\u003cli data-section-id=\"m46xj7\" data-start=\"1123\" data-end=\"1154\"\u003eCompact tube power supplies\u003c\/li\u003e\n\u003cli data-section-id=\"136f9re\" data-start=\"1155\" data-end=\"1203\"\u003eReplacement for 6X4 \/ EZ90 \/ 6202 tube types\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1205\" data-end=\"1292\"\u003eEach tube is tested for proper rectifier function and carefully packed before shipping.\u003c\/p\u003e\n\u003cp data-start=\"1294\" data-end=\"1394\"\u003e\u003cstrong data-start=\"1294\" data-end=\"1394\"\u003eA dependable vintage Japanese rectifier for keeping classic tube gear running the way it should.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Fuzz Audio","offers":[{"title":"Default Title","offer_id":42395957821475,"sku":null,"price":22.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0275\/0699\/9331\/files\/Matsushita_6X4_EZ90_Vintage_NOS_Rectifier_Tube.jpg?v=1778703174","url":"https:\/\/fuzzaudio.shop\/en-ca\/products\/matsushita-6x4","provider":"Fuzz Audio","version":"1.0","type":"link"}