{"product_id":"telefunken-el84-tk-vacuum-tube-single-black-diamond-series-vacuum-tubes","title":"TELEFUNKEN EL84-TK Vacuum Tube Single","description":"\u003cdiv style=\"font-family:'Helvetica Neue',Arial,sans-serif;color:#1A1A2A;max-width:900px;margin:0 auto;line-height:1.6;font-size:15px;\"\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:4px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eProduct overview\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;font-size:16.5px;color:#0D1B3E;\"\u003eThe \u003cstrong\u003eTELEFUNKEN EL84-TK Vacuum Tube Single\u003c\/strong\u003e is the Black Diamond Series EL84, a power pentode and a replacement for any EL84 \/ 6BQ5 tube, supplied here as a single EL84-TK tube.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eTELEFUNKEN describes the EL84-TK as a perfect replacement for any EL84 \/ 6BQ5, offering reliable performance and a great sound. It is a thermionic valve of the power pentode type, originally designed for the output stages of audio frequency amplifiers, and it can deliver up to 17 watts.\u003c\/p\u003e\n\u003ctable style=\"border-collapse:collapse;margin:6px 0 18px;width:100%;max-width:100%;table-layout:fixed;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:55%;color:#5a6170;font-size:13px;text-transform:uppercase;letter-spacing:.05em;\"\u003eOutput, up to\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;font-weight:bold;color:#006d77;font-size:17px;\"\u003e17 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:55%;color:#5a6170;font-size:13px;text-transform:uppercase;letter-spacing:.05em;\"\u003eAlso known as\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;font-weight:bold;color:#006d77;font-size:17px;\"\u003e6BQ5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:55%;color:#5a6170;font-size:13px;text-transform:uppercase;letter-spacing:.05em;\"\u003eTube in this product\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;font-weight:bold;color:#006d77;font-size:17px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:55%;color:#5a6170;font-size:13px;text-transform:uppercase;letter-spacing:.05em;\"\u003eTreated, tested and burned‑in\u003c\/td\u003e\n\u003ctd style=\"padding:12px 8px;text-align:left;border:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;font-weight:bold;color:#006d77;font-size:17px;\"\u003eCryogenic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eKey features\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 14px;padding-left:20px;\"\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eEL84 \/ 6BQ5 power pentode\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\u003cstrong\u003eDelivers up to 17 watts\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eCompact\u003c\/strong\u003e: physically smaller than most common output tubes\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eChiming, articulate sound\u003c\/strong\u003e when overdriven\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eFor the output stages\u003c\/strong\u003e of audio frequency amplifiers\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eBlack Diamond Series\u003c\/strong\u003e: rigorously tested, cryogenically treated and extensively burned-in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eThe EL84-TK sound\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eAlthough it is physically smaller than most common output tubes, this pentode can really deliver. In many ways it is similar to the EL34 without the output horsepower. Like its EL34 cousin, the EL84 is found in many British amplifiers, and when overdriven it produces a distinctive chiming and articulate sound.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eOne tube, two names\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eEL84 is the European designation and 6BQ5 the American one, so the EL84-TK goes into any output socket specified for either.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 14px;padding-left:20px;\"\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eTwo-tube combo amplifier\u003c\/strong\u003e: compact combos with a pair of EL84 output tubes\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eFour-tube combo amplifier\u003c\/strong\u003e: combos and heads with four EL84 output tubes\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eHi-fi amplifier output stage\u003c\/strong\u003e: audio frequency amplifiers with EL84 \/ 6BQ5 output stages\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eStudio backline\u003c\/strong\u003e: studios keeping their EL84 amplifiers ready for chiming overdriven tones\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eLive sound and touring spares\u003c\/strong\u003e: backline techs carrying replacement output tubes\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;\"\u003e\n\u003cstrong\u003eRental inventory\u003c\/strong\u003e: rental stores retubing amplifiers between bookings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eBlack Diamond Series\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eTELEFUNKEN Elektroakustik Black Diamond Series vacuum tubes are new production tubes, manufactured in partnership with a specialist vacuum tube factory in Slovakia and designed to be harmonically rich and tonally balanced. Each tube is rigorously tested, cryogenically treated and extensively burned-in before it carries the Black Diamond name, so the EL84-TK arrives ready for the most demanding applications.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eThis configuration: Single\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThis product is one EL84-TK tube, sold singly.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eFitting and care\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eAlways switch the equipment off, unplug it from the mains and let the tubes cool completely before removing or fitting a tube. Fit the EL84-TK only in a socket specified for the EL84 or 6BQ5, keep each tube in the position of the one it replaces, and press it straight and fully into the socket. Power sections hold high voltages, so leave any work inside the chassis, including any bias adjustment the amplifier requires, to a qualified technician. After fitting, let the equipment warm up and listen at low volume first. Store spare tubes in their packaging, protected from knocks and moisture.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eWhat's included\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;margin:0 0 14px;font-size:14px;width:100%;max-width:100%;table-layout:fixed;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background:#F5F7F9;\"\u003e\n\u003ctd style=\"font-weight:600;color:#0D1B3E;padding:8px 10px;border-bottom:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:38%;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;\"\u003eOne TELEFUNKEN EL84‑TK vacuum tube\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"font-weight:600;color:#0D1B3E;padding:8px 10px;border-bottom:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;width:38%;\"\u003eNot included\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;border-bottom:1px solid #DDE2E8;vertical-align:top;word-break:normal;overflow-wrap:break-word;\"\u003eAmplifier or equipment, sockets and installation, bias adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eIn the box\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 14px;padding-left:20px;\"\u003e\u003cli style=\"margin:0 0 6px;\"\u003eOne TELEFUNKEN EL84-TK vacuum tube\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp style=\"margin:10px 0 14px;padding:10px 14px;background:#F5F7F9;border-left:3px solid #006D77;font-size:14px;color:#1A1A2A;\"\u003eVacuum tubes are glass components: handle them by the glass envelope, avoid knocks and keep them in their packaging until fitting.\u003c\/p\u003e\n\u003ch3 style=\"font-size:17px;font-weight:700;color:#0D1B3E;text-transform:uppercase;letter-spacing:.06em;margin:30px 0 12px;padding:0 0 7px;border-bottom:2px solid #006D77;\"\u003eTELEFUNKEN EL84-TK Vacuum Tube Single: frequently asked questions\u003c\/h3\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eIs the EL84-TK the same as a 6BQ5?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eYes. TELEFUNKEN offers the EL84-TK as a replacement for any EL84 \/ 6BQ5 tube.\u003c\/p\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eHow much power can an EL84 deliver?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eTELEFUNKEN states that the EL84 can deliver up to 17 watts.\u003c\/p\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eWhat does Black Diamond Series mean?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eIt is TELEFUNKEN Elektroakustik's range of new production vacuum tubes, designed to be harmonically rich and tonally balanced; each tube is rigorously tested, cryogenically treated and extensively burned-in.\u003c\/p\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eDo I need a technician to fit it?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eFitting is a straight swap in the socket, but power sections and rectifier circuits hold high voltages. Where an amplifier has adjustable bias, have a qualified technician check it after fitting new power tubes, following the amplifier maker's instructions.\u003c\/p\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eHow many tubes are included?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eOne tube, sold singly.\u003c\/p\u003e\n\u003ch4 style=\"font-size:15px;font-weight:700;color:#0D1B3E;margin:18px 0 6px;\"\u003eWhere can I buy the TELEFUNKEN EL84-TK Vacuum Tube Single in India?\u003c\/h4\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThe TELEFUNKEN EL84-TK Vacuum Tube Single is available from \u003cstrong\u003eShivansh Electronics, Kolkata, West Bengal, India\u003c\/strong\u003e, with delivery across India.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Shivansh Electronics","offers":[{"title":"Default Title","offer_id":67947050959215,"sku":"TELEFUNKEN-EL84-TK-Vacuum-Tube-Single","price":8000.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0964\/4766\/0399\/files\/TELEFUNKEN-EL84-TK-VACUUM-TUBE-SINGLE-TELEFUNKEN-ADD-ONS-SHIVANSH-ELECTRONICS-1.webp?v=1793329774","url":"https:\/\/shivanshelectronics.in\/products\/telefunken-el84-tk-vacuum-tube-single-black-diamond-series-vacuum-tubes","provider":"Shivansh Electronics","version":"1.0","type":"link"}