{"product_id":"philips-12au7-ecc83-long-plates-foil-d-45-getter-holland","title":"Philips ECC83 Long Plates Foil D 45° Getter Matched Pair - Heerlen 1955 K61","description":"\u003cdiv\u003e\n\u003cdiv style=\"font-weight: 400; color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan style=\"font-size: 13.0pt; font-family: 'Arial',sans-serif; mso-fareast-font-family: 'Times New Roman'; color: #2a633a; mso-font-kerning: 0pt; mso-ligatures: none;\"\u003eSoundlumia's Opinion\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003eThe \"textbook Heerlen sound\" has been referenced in several Soundlumia ECC83\/12AX7 listings, and many tube enthusiasts asked what all that means. So here 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\/div\u003e\n\u003cdiv\u003e\u003cb\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003eThe most distinctive sound feature of the Heerlen ECC83'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 and structured. Bass is incredibly deep but well controlled and feels as accurate as on the high end German ECC83's (Siemens, Telefunken, Valvo etc.) We would recommend these as an excellent choice if you are seeking the high end ECC83 tubes that can deliver the legendary Philips house sound flawlessly. \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"orphans: 2; text-align: start; text-indent: 0px; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 128, 0); font-family: Arial; font-size: large;\"\u003e\u003cb\u003ePair ( Matched 1955 K61 )\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 128, 0); font-family: Arial; font-size: large;\"\u003e\u003cb\u003ePhilips ECC83 Long Plates Foil D 45° Getter Matched Pair - Heerlen 1955 K61\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 128, 0); font-family: Arial; font-size: large;\"\u003e\u003cb\u003e$689.10\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0809\/2388\/5888\/files\/b6cd386e-b100-48cb-af71-b2fb688da200.png?v=1759437862\"\u003e\u003cb style=\"color: rgb(42, 99, 58);\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\"\u003e\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Philips","offers":[{"title":"Pair \/ Matched 1955 K61","offer_id":51128492589376,"sku":"267423749964","price":689.1,"currency_code":"USD","in_stock":true},{"title":"Single Tube \/ 1x 1955 K61 - Strong","offer_id":51128492687680,"sku":"266794479788","price":382.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0809\/2388\/5888\/files\/20251001_175905246_iOS_1.heic?v=1759438232","url":"https:\/\/www.soundlumia.com\/products\/philips-12au7-ecc83-long-plates-foil-d-45-getter-holland","provider":"Soundlumia","version":"1.0","type":"link"}