{"product_id":"12au7-vintage-preamp-tubes-working-class","title":"12AU7 - Working Class Vintage Preamp Tubes","description":"\u003ch2 data-section-id=\"am64iw\" data-start=\"0\" data-end=\"35\"\u003eWorking Class Collection — 12AU7\u003c\/h2\u003e\n\u003cp data-start=\"37\" data-end=\"139\"\u003eNot everyone needs rare Telefunkens or collector-grade Mullards to experience real vintage tube sound.\u003c\/p\u003e\n\u003cp data-start=\"141\" data-end=\"303\"\u003eThe Working Class Collection was built for musicians, hi-fi listeners, and first-time tube rollers who want authentic vintage tone without collector-level prices.\u003c\/p\u003e\n\u003cp data-start=\"305\" data-end=\"539\"\u003eThese vintage USA and Japanese 12AU7 tubes were made during the golden age of vacuum tube manufacturing and sourced from old repair shop stock, organs, laboratory equipment, radios, and forgotten tube stashes across America and Japan.\u003c\/p\u003e\n\u003cp data-start=\"541\" data-end=\"766\"\u003eEach order includes a randomly selected vintage 12AU7 from trusted makers such as RCA, GE, Sylvania, Raytheon, Toshiba, Matsushita, Hitachi, and others depending on current inventory. Brands and construction styles will vary.\u003c\/p\u003e\n\u003cp data-start=\"768\" data-end=\"982\"\u003eYou may see light cosmetic wear, faded logos, or less collectible branding, but every tube is fully tested, verified, and selected because it still delivers what matters most: warm, musical, reliable vintage sound.\u003c\/p\u003e\n\u003cp data-start=\"984\" data-end=\"1240\"\u003eVintage 12AU7 tubes are known for their warm and smooth presentation, balanced tone, and low noise operation. They remain a favorite in hi-fi preamps, headphone amplifiers, vintage receivers, studio equipment, and guitar amplifiers where natural musicality matters.\u003c\/p\u003e\n\u003cp data-start=\"1242\" data-end=\"1320\"\u003eWe professionally match tubes by both brand and test scores whenever possible:\u003c\/p\u003e\n\u003cul data-start=\"1321\" data-end=\"1494\"\u003e\n\u003cli data-section-id=\"6rxkio\" data-start=\"1321\" data-end=\"1374\"\u003eOrders of 2–4 tubes will receive fully matched sets\u003c\/li\u003e\n\u003cli data-section-id=\"1o4zux4\" data-start=\"1375\" data-end=\"1432\"\u003eOrders larger than 4 tubes will be matched in sets of 4\u003c\/li\u003e\n\u003cli data-section-id=\"1ttd7om\" data-start=\"1433\" data-end=\"1494\"\u003eExample: an order of 8 tubes will receive two matched quads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1496\" data-end=\"1574\"\u003eThis is one of the most affordable ways to experience real vintage tube sound.\u003c\/p\u003e\n\u003cp data-start=\"1576\" data-end=\"1604\"\u003eTested. Matched. Guaranteed.\u003c\/p\u003e\n\u003cp data-start=\"1606\" data-end=\"1637\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"1606\" data-end=\"1637\" data-is-last-node=\"\"\u003eTurn on, Tune in, Fuzz Out.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Fuzz Audio","offers":[{"title":"USA","offer_id":42390976856099,"sku":null,"price":36.0,"currency_code":"CAD","in_stock":true},{"title":"Japan","offer_id":42390976888867,"sku":null,"price":29.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0275\/0699\/9331\/files\/12AU7WorkingClass.jpg?v=1778098429","url":"https:\/\/fuzzaudio.shop\/en-ca\/products\/12au7-vintage-preamp-tubes-working-class","provider":"Fuzz Audio","version":"1.0","type":"link"}