{"product_id":"philips-ecc82-12au7-short-plates-matched-pair-heerlen-nl-65-66-near-nos","title":"Philips ECC82 12AU7 Short Plates Matched Pair - Heerlen, NL '65\/'66, Near NOS","description":"\u003cdiv\u003e\n\u003cdiv style=\"orphans: 2; text-align: start; text-indent: 0px; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eSoundlumia's Opinion\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eThe \"textbook Heerlen sound\" has been referenced in several Soundlumia listings of Philips Holland 12AU7\/ECC82 tubes, and many tube enthusiasts asked what that all means. So this is the answer: the late 1950s and very early 1960s tone, the beginning of over a decade's excellence in sound, the classic tonal template for all the great (and greater) Amperex\/Philips\/Valvo\/Miniwatt tubes to be made in the years to come, the timeless Philips radio tone that many of us grew up listening to. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eThe most distinctive sound feature of the Heerlen 12AU7's is the transparent, natural and expansive midrange presentation, with a slight touch of warmth that illuminates your music. Every piece of music you play through these tubes sounds like from a vinyl record, whether your sound source is phono or not. The sound stage is spacious, deep,  structured and holographical. Bass is incredibly deep but well controlled and feels as accurate as on the high end German ECC82's (Siemens, Telefunken, Valvo Hamburg etc.) The stellar performance of foil d-getter takes all these wonderful sound qualities to a whole new level: instrument separation is super clean, detail retrieval is surreal, and it goes without saying that the extremely low noise on these tubes is to the vanishing point.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eProfessional Tube Testing \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003ca name=\"_Hlk169732138\"\u003e\u003c\/a\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eThis set was tested and certified by \u003cb\u003eRoeTest V11 Professional Tube Testing System\u003c\/b\u003e with the following result: \u003c\/span\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eTube 1:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eMeasured transconductance(GM): 2.08\/2.09 mA\/V - 95%\/95% (100% = 2.2 mA\/V)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eMeasured plate current(IA): 9.797\/9.91 mA - 93%\/94% (100% = 10.5 mA)\u003c\/span\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eTube 2:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eMeasured transconductance(GM): 2.21\/1.88 mA\/V - 100%\/85% (100% = 2.2 mA\/V)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eMeasured plate current(IA): 11.065\/9.422 mA - 105%\/90% (100% = 10.5 mA)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eNO shorts, leakage or gas. NO noise or microphonics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eCurve trace is also included in the original RoeTest report.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eAppearance \u0026amp; cosmetic condition\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eThis tube is in pristine NIB condition. 100% of the paint is intact and well preserved. The Heerlen factory date code etched on glass is perfectly visible: \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eGf2 \u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Cambria Math',serif; mso-bidi-font-family: 'Cambria Math';\"\u003e⊿\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e5L1\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; mso-ascii-font-family: Aptos; mso-hansi-font-family: Aptos; mso-bidi-font-family: Aptos;\"\u003e \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e(\u003c\/span\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Cambria Math',serif; mso-bidi-font-family: 'Cambria Math';\"\u003e⊿\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e = Heerlen, NL, 5 = 1965,\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; mso-ascii-font-family: Aptos; mso-hansi-font-family: Aptos; mso-bidi-font-family: Aptos;\"\u003e \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eL = December, 1 = Week 1 of production month)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eGf2 \u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Cambria Math',serif; mso-bidi-font-family: 'Cambria Math';\"\u003e⊿\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e6I2\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; mso-ascii-font-family: Aptos; mso-hansi-font-family: Aptos; mso-bidi-font-family: Aptos;\"\u003e \u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e(\u003c\/span\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Cambria Math',serif; mso-bidi-font-family: 'Cambria Math';\"\u003e⊿\u003c\/span\u003e\u003c\/b\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e = Heerlen, NL, 6 = 1966\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e, I = September 2 = Week 2 of production month)\u003c\/span\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003ePackaging\u003c\/span\u003e\u003c\/b\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 13.0pt;\"\u003eNEW white tube boxes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Philips","offers":[{"title":"Default Title","offer_id":49537071776064,"sku":"266956128302","price":206.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/2388\/5888\/files\/57_88a0a16b-1f31-4f1d-ae2b-3d1ab05904b1.jpg?v=1724048474","url":"https:\/\/www.soundlumia.com\/it\/products\/philips-ecc82-12au7-short-plates-matched-pair-heerlen-nl-65-66-near-nos","provider":"Soundlumia","version":"1.0","type":"link"}