{"title":"Valves","description":"\u003cp\u003eBring your amplifier to life with our high-quality vacuum tubes. Tubes are the key component in many amplifiers, providing a warm, dynamic sound with plenty of personality. Whether you need to replace a faulty tube or want to experiment with different sounds, you'll find the right tube for your amplifier.\u003c\/p\u003e","products":[{"product_id":"electro-harmonix-12at7eh-26870","title":"ELECTRO HARMONIX 12AT7EH","description":"\u003cdiv\u003eThis is the new and improved version of the Electro-Harmonix 12AT7. This new 12AT7 tube design features short plates to help reduce microphonics and noise. The 12AT7 tube is equivalent to the European ECC81 tube and can be used in any 12AT7 or ECC81 circuit. The Electro-Harmonix 12AT7WC-EH tube is ideal for phase inverters and reverb controllers.\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311863832907,"sku":"12AT7EH","price":26.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-12at7eh_15fc0005-8709-46e9-a6c1-1b7685457394.jpg?v=1779197484"},{"product_id":"electro-harmonix-6l6g-tung-sol-platinum-matched-26911","title":"Electro-Harmonix 6L6G TUNG-SOL PLATINUM MATCHED","description":"\u003cdiv\u003eThe Tung - Sol 6L6G valve is a beam tetrode in a glass bulb with an octal base, with an equipotential cathode, designed to amplify low-frequency power in HI-FI audio output stages.\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311868158283,"sku":"6L6G-TUNGPL","price":104.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-6l6g-tung-sol-platinum-matched_c0d67465-c996-48c8-bf2f-64c26ea1ce47.jpg?v=1779197521"},{"product_id":"electro-harmonix-6l6eh-platinum-matched-26912","title":"Electro-Harmonix 6L6EH PLATINUM MATCHED","description":"\u003cp\u003eThe Electro-Harmonix 6L6 tube, also known as the 6L6-EH, is inspired by the vintage RCA 6L6GC \"black plate\". The 6L6EH features larger plate dimensions and an improved grid structure to increase the handling capacity of the\u003c\/p\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311868223819,"sku":"6L6EHPL","price":47.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-6l6eh-platinum-matched_843a84a0-f702-4152-8963-05521ddcd92d.jpg?v=1779197525"},{"product_id":"electro-harmonix-12ax7-26914","title":"Electro-Harmonix 12AX7","description":"\u003cdiv\u003eThe 12AX7 combines two completely independent high-mu triodes in the small 9-pin button construction. It is suitable for applications where high-voltage gain and low-power heather are important considerations, such as ampl\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311868322123,"sku":"12AX7-TUNGSOL","price":39.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-12ax7-preamp-tube-1-e1484499213205.png?v=1779197528"},{"product_id":"electro-harmonix-12ax7eh-26915","title":"Electro Harmonix 12AX7EH","description":"\u003cdiv\u003eThe 12AX7EH is a high-mu dual triode with a spiral filament and a special construction to minimize microphonic behavior. Ideal for use as a replacement in guitar amplifiers and anywhere low noise and high gain are required.\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311868584267,"sku":"12AX7EH","price":29.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-12ax7eh-_1_git0011099-000_0d05a58d-ec14-406b-b7fd-d33c3abc9b4b.jpg?v=1779197528"},{"product_id":"electro-harmonix-12at7-tung-sol-26916","title":"Electro-Harmonix 12AT7 TUNG-SOL","description":"\u003cdiv\u003e\u003cp\u003eThe 12AT7 combines two high transconductance triodes in a miniature 9-pin construction. Its low capacitance and high plate current-to-transconductance ratio make it suitable for use as a combined oscillator and mixer \u003c\/p\u003e\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311868649803,"sku":"12AT7-TUNGSOL","price":16.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-12at7-tung-sol_b06962be-0be4-420f-aca0-b323aedc4e65.jpg?v=1779197532"},{"product_id":"electro-harmonix-el34b-tung-sol-platinum-matched-26986","title":"Electro-Harmonix EL34B TUNG-SOL PLATINUM MATCHED","description":"\u003cdiv\u003eThe Tungsol EL34-B is a higher-impedance EL34 tube design with greater touch sensitivity and a unique clipping characteristic with a touch of 6L6 sound.\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311877497163,"sku":"EL34B-TUNGPL","price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/12at720tg_3e069248-4a74-4606-a28e-daa0b50227cf.jpg?v=1779197655"},{"product_id":"electro-harmonix-el34eh-platinum-matched-26987","title":"Electro Harmonix EL34EH PLATINUM MATCHED","description":"\u003cdiv\u003eThe EL34EH tube is extremely musical, with a rich, smooth, and highly detailed sound that is never harsh. It is the perfect EL34 for vintage equipment and a sure way to enhance the performance of modern gear. According to Vacuum T technical magazine\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311877595467,"sku":"EL34EHPL","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/ehx-el34eh-platinum-matched_1_e8cb4cc6-de42-4f86-b461-7f2c07d45288.jpg?v=1779197656"},{"product_id":"electro-harmonix-el84-6bq5-tung-sol-platinum-match-26988","title":"Electro-Harmonix EL84\/6BQ5 TUNG-SOL PLATINUM MATCH","description":"\u003cdiv\u003eImproved version of the 6BQ5 \/ EL84 for use in industrial and military circuits, also known as the 7189. Due to its higher plate voltage and greater headroom, it became the favorite power tube for amplifiers\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311877628235,"sku":"EL84TUNG-SOLPL","price":39.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-el84eh-platinum-matched_1_5abe0ae2-643a-4078-893f-3c0762707a6e.jpg?v=1779197658"},{"product_id":"electro-harmonix-el84eh-platinum-matched-26989","title":"Electro-Harmonix EL84EH PLATINUM MATCHED","description":"\u003cdiv\u003ePack of two matched valves. Miniature glass envelope pentode output valve with indirectly heated cathode designed for use as a low-frequency power amplifier for radio equipment.\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57311877824843,"sku":"EL84EHPL","price":60.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/electro-harmonix-el84eh-platinum-matched_e175495d-00a6-4333-899f-cdc530b61da0.jpg?v=1779197662"},{"product_id":"electro-harmonix-6973-eh-platinum-matched-32572","title":"ELECTRO HARMONIX 6973-EH Platinum matched","description":"\u003cdiv\u003e\u003cp\u003eElectro-Harmonix tubes are all newly designed and of excellent quality. Many original equipment manufacturers use relabeled Electro-Harmonix vacuum tubes in their amplifiers. If you want great-sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.\u003c\/p\u003e\u003c\/div\u003e","brand":"ELECTRO HARMONIX","offers":[{"title":"Default Title","offer_id":57312106479947,"sku":"6973-EH","price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/6973-eh_ml_b1f89d61-e51f-4065-bb2e-e7db07e4846a.jpg?v=1779200056"},{"product_id":"engl-6550-ro6550-289453","title":"Engl 6550 - RÖ6550","description":"\u003cdiv\u003e6550 - RÖ6550\u003c\/div\u003e","brand":"ENGL","offers":[{"title":"Default Title","offer_id":57312901267787,"sku":"2093392696002","price":189.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/engl-ro6550_63ae19e5-020d-4613-8666-b571968d8b90.jpg?v=1779206232"},{"product_id":"engl-6l6gc-ro6l6gc-289454","title":"Engl 6L6GC - RÖ6L6GC","description":"\u003cdiv\u003e6L6GC - RÖ6L6GC\u003c\/div\u003e","brand":"ENGL","offers":[{"title":"Default Title","offer_id":57312901333323,"sku":"2093392696003","price":75.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/engl-ro6l6gc_68cfc940-ad72-49dc-869b-be3756134742.jpg?v=1779206232"},{"product_id":"engl-el34-roel34-289455","title":"Engl EL34 - RÖEL34","description":"\u003cdiv\u003eEL34 - RÖEL34\u003c\/div\u003e","brand":"ENGL","offers":[{"title":"Default Title","offer_id":57312901366091,"sku":"2093392696004","price":27.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/engl-roel34_54d3481e-66d1-44a1-9385-cdae94bffea2.jpg?v=1779206232"},{"product_id":"engl-el84-289456","title":"Engl EL84","description":"\u003cdiv\u003eEL84 - Matched power tubes\u003c\/div\u003e","brand":"ENGL","offers":[{"title":"Default Title","offer_id":57312901562699,"sku":"2093392696005","price":50.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/engl-el84-duett-matched_a6d57225-2519-4f21-a831-bcf1574f77c8.jpg?v=1779206234"},{"product_id":"mesa-boogie-valvulas-12ax7-individual-768639","title":"MESA BOOGIE 12AX7 TUBES (INDIVIDUAL)","description":"\u003cul class=\"eigenschaften\"\u003e\n\n\u003cli\u003e12AX7 tubes\u003c\/li\u003e\n\n\u003cli\u003ePosition: Preamp\u003c\/li\u003e\n\n\u003cli\u003eType: ECC83 \/ 12AX7\u003c\/li\u003e\n\n\u003cli\u003eOutput volume: Individual\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315561537867,"sku":"750150F","price":32.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-12ax7-a_7fb55be3-6251-4ab4-bf33-7813867550b9.jpg?v=1779220494"},{"product_id":"mesa-boogie-valvulas-6l6-gc-str-448-duet-768640","title":"MESA BOOGIE 6L6 GC STR 448 TUBES (DUET)","description":"\u003ch1 data-start=\"0\" data-end=\"43\"\u003eMESA BOOGIE 6L6 GC STR 448 TUBE (DUET)\u003c\/h1\u003e\u003ch3 data-start=\"45\" data-end=\"124\"\u003eControl, headroom, and punch with the MESA BOOGIE 6L6 GC STR 448 TUBE (DUET)\u003c\/h3\u003e\u003cp data-start=\"126\" data-end=\"583\"\u003e\u003cstrong data-start=\"126\" data-end=\"203\"\u003eThe MESA BOOGIE 6L6 GC STR 448 TUBE (DUET) is a \u003cem data-start=\"180\" data-end=\"201\"\u003epower tube\u003c\/em\u003e\u003c\/strong\u003e factory selected and matched to deliver consistent response, ample headroom, and just the right “sag” in 6L6GC-compatible amplifiers. Designed for guitarists seeking firm lows, defined mids, and musical highs, it provides thermal and electrical stability in live and studio settings, while also extending the life of the equipment thanks to the brand’s rigorous testing.\u003c\/p\u003e\u003ch3 data-start=\"586\" data-end=\"657\"\u003eKey features of the MESA BOOGIE 6L6 GC STR 448 TUBE (DUET)\u003c\/h3\u003e\u003cp data-start=\"659\" data-end=\"711\"\u003eMatched and tested pair for maximum consistency\u003c\/p\u003e\u003cp data-start=\"713\" data-end=\"762\"\u003eHigh headroom with firm lows and defined attack\u003c\/p\u003e\u003cp data-start=\"764\" data-end=\"815\"\u003eMusical response with controlled compression (“sag”)\u003c\/p\u003e\u003cp data-start=\"817\" data-end=\"865\"\u003eMesa selection for reliability and low microphonics\u003c\/p\u003e\u003cp data-start=\"867\" data-end=\"908\"\u003eDirect replacement in 6L6GC octal socket\u003c\/p\u003e\u003ch3 data-start=\"911\" data-end=\"979\"\u003eWhat makes the MESA BOOGIE 6L6 GC STR 448 TUBE (DUET) special?\u003c\/h3\u003e\u003cp data-start=\"981\" data-end=\"1328\"\u003eComprehensive quality control (matching, stress testing, and parameter measurement) ensures that both tubes work as a single system, maintaining stable bias and a predictable tone at any volume. For less experienced users, this means easy installation, less maintenance, and a “ready to play” sound without complex adjustments.\u003c\/p\u003e\u003ch3 data-start=\"1404\" data-end=\"1479\"\u003eTechnical specifications of the MESA BOOGIE 6L6 GC STR 448 TUBE (DUET)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eType: 6L6GC power tube\u003c\/li\u003e\n\n\u003cli\u003eMesa designation: STR 448\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Beam tetrode\u003c\/li\u003e\n\n\u003cli\u003eBase: Octal (8 pins)\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 6.3 V\u003c\/li\u003e\n\n\u003cli\u003eFilament current: Approx. 0.9 A\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate power: 30 W\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate voltage: 500 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum screen voltage: 450 V\u003c\/li\u003e\n\n\u003cli\u003eTypical screen dissipation: 5 W\u003c\/li\u003e\n\n\u003cli\u003eTone response: Firm lows, present mids, smooth highs\u003c\/li\u003e\n\n\u003cli\u003eMatched: Pair factory selected and balanced\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: 6L6GC replacement in manufacturer-specified amplifiers\u003c\/li\u003e\n\n\u003cli\u003eApplication: Power stage for guitar, bass, and tube audio\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315561570635,"sku":"750635D","price":120.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-power-str448-6l6gc-duett_7e519f87-10ca-46a1-aab8-8c263a302e2c.jpg?v=1779220497"},{"product_id":"mesa-boogie-valvula-el-34-str-447-duet-768641","title":"MESA BOOGIE EL-34 VALVE STR 447 (DUET)","description":"\u003cul\u003e\n\n\u003cli\u003eValve type: EL34 STR 447 Power\u003c\/li\u003e\n\n\u003cli\u003eBrand: Mesa\/Boogie\u003c\/li\u003e\n\n\u003cli\u003eMatched\/Screened: yes\u003c\/li\u003e\n\n\u003cli\u003eBoogie reference: 750600D\u003c\/li\u003e\n\n\u003cli\u003eBox with two units \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003cp\u003e\u003c\/p\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315561603403,"sku":"750600D","price":105.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-el-34-str-447-2-unidades-pareadas_d160deb9-b374-4675-8aff-88dd78cfdfd8.jpg?v=1779220497"},{"product_id":"mesa-boogie-valvulas-el-84-6bq5-duet-768642","title":"MESA BOOGIE EL-84 \/ 6BQ5 TUBES (DUET)","description":"\u003ch1 data-start=\"0\" data-end=\"41\"\u003eMESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET)\u003c\/h1\u003e\u003ch3 data-start=\"43\" data-end=\"129\"\u003eLively response and musical compression with the MESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET)\u003c\/h3\u003e\u003cp data-start=\"131\" data-end=\"526\"\u003eThe \u003cstrong data-start=\"134\" data-end=\"177\"\u003eMESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET)\u003c\/strong\u003e is a factory-matched \u003cstrong data-start=\"185\" data-end=\"208\"\u003epower tube\u003c\/strong\u003e designed to deliver an agile attack, expressive mids, and controlled musical sag in compatible amplifiers. Built for studio and direct use, it offers thermal stability, low microphonics, and consistent tone take after take, with direct installation in a 9-pin Noval socket and no complex user adjustments.\u003c\/p\u003e\u003ch3 data-start=\"531\" data-end=\"600\"\u003eKey features of the MESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET)\u003c\/h3\u003e\u003cp data-start=\"602\" data-end=\"654\"\u003eMatched and tested pair for maximum consistency\u003c\/p\u003e\u003cp data-start=\"656\" data-end=\"690\"\u003eArticulate mids and sweet highs\u003c\/p\u003e\u003cp data-start=\"692\" data-end=\"732\"\u003eModerate headroom with musical compression\u003c\/p\u003e\u003cp data-start=\"734\" data-end=\"768\"\u003eLow microphonics and controlled noise\u003c\/p\u003e\u003cp data-start=\"770\" data-end=\"815\"\u003eDirect replacement in a 9-pin Noval socket\u003c\/p\u003e\u003ch3 data-start=\"820\" data-end=\"886\"\u003eWhat makes the MESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET) special?\u003c\/h3\u003e\u003cp data-start=\"888\" data-end=\"1167\"\u003eThe selection and matching process ensures that both tubes work together as a single system, maintaining stable bias and a consistent response at any volume. This results in less maintenance, tour-ready reliability, and a predictable tone even under demanding conditions.\u003c\/p\u003e\u003cp data-start=\"1169\" data-end=\"1251\"\u003e\u003cstrong data-start=\"1169\" data-end=\"1251\"\u003eProfessional consistency and classic EL84 character in a ready-to-play pair.\u003c\/strong\u003e\u003c\/p\u003e\u003ch3 data-start=\"1256\" data-end=\"1329\"\u003eTechnical specifications of the MESA BOOGIE EL-84 \/ 6BQ5 TUBE (DUET)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eType: EL84 \/ 6BQ5 power pentode tube\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Beam power pentode\u003c\/li\u003e\n\n\u003cli\u003eBase: 9-pin Noval\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 6.3 V\u003c\/li\u003e\n\n\u003cli\u003eFilament current: approx. 0.76 A\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate voltage: 300 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum screen voltage: 300 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate dissipation: 12 W\u003c\/li\u003e\n\n\u003cli\u003eTone response: Tight lows, present mids, smooth highs\u003c\/li\u003e\n\n\u003cli\u003eMicrophonics: Low-microphonic selection\u003c\/li\u003e\n\n\u003cli\u003eMatched: Factory-matched pair\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: EL84 \/ 6BQ5 replacement in specified amplifiers\u003c\/li\u003e\n\n\u003cli\u003eApplication: Power stage for guitar and tube audio\u003c\/li\u003e\n\n\u003cli\u003eUnit: Pack of 2 (pair)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315561963851,"sku":"750606D","price":60.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/preview_77_baf369c3-756f-43c2-a8f1-13f0ba5449e6.jpg?v=1779220498"},{"product_id":"mesa-boogie-valvulas-6v6s-gta-str-417-duet-768643","title":"MESA BOOGIE 6V6S GTA STR 417 TUBES (DUET)","description":"\u003carticle 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 scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" tabindex=\"-1\" dir=\"auto\" data-turn-id=\"7835f27f-bc56-4ed7-a7db-d3526e223473\" data-testid=\"conversation-turn-139\" data-scroll-anchor=\"true\" data-turn=\"assistant\"\u003e\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\u003cdiv class=\"[--thread-content-max-width:40rem] thread-lg:[--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\" tabindex=\"-1\"\u003e\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"c13a04d5-d2a0-4ef4-8fb6-e668028ed4e0\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5-thinking\"\u003e\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words light markdown-new-styling\"\u003e\n\n\u003ch1 data-start=\"0\" data-end=\"45\"\u003eMESA BOOGIE 6V6S GTA STR 417 TUBE (DUET)\u003c\/h1\u003e\n\n\u003ch3 data-start=\"47\" data-end=\"134\"\u003eMore American warmth and dynamics with the MESA BOOGIE 6V6S GTA STR 417 TUBE (DUET)\u003c\/h3\u003e\n\n\u003cp data-start=\"136\" data-end=\"542\"\u003eThe \u003cstrong data-start=\"139\" data-end=\"186\"\u003eMESA BOOGIE 6V6S GTA STR 417 TUBE (DUET)\u003c\/strong\u003e is a \u003cstrong data-start=\"194\" data-end=\"217\"\u003epower tube\u003c\/strong\u003e factory matched to deliver controlled headroom, musical compression (“sag”), and a sweet, articulate midrange response. Designed to directly replace tubes in 6V6-compatible amplifiers, it delivers that classic American character with round lows, smooth highs, and highly expressive feel in the studio and live.\u003c\/p\u003e\n\n\u003ch3 data-start=\"545\" data-end=\"618\"\u003eKey features of the MESA BOOGIE 6V6S GTA STR 417 TUBE (DUET)\u003c\/h3\u003e\n\n\u003cp data-start=\"620\" data-end=\"664\"\u003eSelected and tested “matched pair” duo\u003c\/p\u003e\n\n\u003cp data-start=\"666\" data-end=\"706\"\u003eModerate headroom with natural compression\u003c\/p\u003e\n\n\u003cp data-start=\"708\" data-end=\"742\"\u003eSweet midrange and rounded highs\u003c\/p\u003e\n\n\u003cp data-start=\"744\" data-end=\"781\"\u003eLow microphonics and thermal stability\u003c\/p\u003e\n\n\u003cp data-start=\"783\" data-end=\"822\"\u003eDirect replacement in 6V6 octal sockets\u003c\/p\u003e\n\n\u003ch3 data-start=\"825\" data-end=\"895\"\u003eWhat makes the MESA BOOGIE 6V6S GTA STR 417 TUBE (DUET) special?\u003c\/h3\u003e\n\n\u003cp data-start=\"897\" data-end=\"1159\"\u003eThe rigorous selection process ensures matched units that maintain stable bias and a consistent response at any volume. This results in easy installation, less maintenance, and a predictable tone even on tours or during intensive sessions.\u003c\/p\u003e\n\n\u003cp data-start=\"1161\" data-end=\"1243\"\u003e\u003cstrong data-start=\"1161\" data-end=\"1243\"\u003e6V6 warmth with professional-grade reliability and consistency between units.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3 data-start=\"1246\" data-end=\"1323\"\u003eTechnical specifications of the MESA BOOGIE 6V6S GTA STR 417 TUBE (DUET)\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eType: 6V6S GTA power tube\u003c\/li\u003e\n\n\u003cli\u003eMesa designation: STR 417\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Beam tetrode\u003c\/li\u003e\n\n\u003cli\u003eBase: Octal (8 pins)\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 6.3 V\u003c\/li\u003e\n\n\u003cli\u003eFilament current: Approx. 0.45 A\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate power: 14 W\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate voltage: Typically 350 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum screen voltage: Typically 285–300 V\u003c\/li\u003e\n\n\u003cli\u003eScreen dissipation: Typically 2 W\u003c\/li\u003e\n\n\u003cli\u003eTonal response: Round lows, sweet midrange, smooth highs\u003c\/li\u003e\n\n\u003cli\u003eMatched: Factory selected and balanced duo\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: 6V6 \/ 6V6GT replacement in specified amplifiers\u003c\/li\u003e\n\n\u003cli\u003eApplication: Power stage for guitar and tube audio\u003c\/li\u003e\n\n\u003cli\u003eUnit: Pack of 2 (duo)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/article\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315561996619,"sku":"750620D","price":92.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/6v6-mesa-boogie-600x600_fa3d19aa-746d-4226-9f8b-2029a4ea3fe6.jpg?v=1779220501"},{"product_id":"mesa-boogie-valvula-12at7-individual-768646","title":"MESA BOOGIE 12AT7 TUBE (INDIVIDUAL)","description":"\u003ch3 data-start=\"853\" data-end=\"918\"\u003eWhat makes the MESA BOOGIE 12AT7 TUBE (INDIVIDUAL) special?\u003c\/h3\u003e\u003cp data-start=\"920\" data-end=\"1209\"\u003eIts sweet spot lies in critical functions: it maintains clarity where others saturate, improves the definition of the reverb effect, and stabilizes the power stage as a phase inverter. For less experienced users, it is a “plug-and-play” upgrade to gain control without losing musicality.\u003c\/p\u003e\u003ch3 data-start=\"1300\" data-end=\"1372\"\u003eTechnical specifications of the MESA BOOGIE 12AT7 TUBE (INDIVIDUAL)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eTube type: 12AT7 \/ ECC81, dual triode\u003c\/li\u003e\n\n\u003cli\u003eBase: Noval, 9 pins\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 6.3 V at 300 mA or 12.6 V at 150 mA\u003c\/li\u003e\n\n\u003cli\u003eAmplification factor (µ): approx. 60\u003c\/li\u003e\n\n\u003cli\u003eTypical transconductance: 4.5–5.5 mA\/V\u003c\/li\u003e\n\n\u003cli\u003eTypical plate resistance: ~10–11 kΩ per triode\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate voltage: 300 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate dissipation: 2.5 W per triode\u003c\/li\u003e\n\n\u003cli\u003eRecommended use: phase inverter, reverb driver, loop buffer\u003c\/li\u003e\n\n\u003cli\u003eNoise and microphony: low, factory-selected\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: direct 12AT7 \/ ECC81 replacement in specified equipment\u003c\/li\u003e\n\n\u003cli\u003eSales unit: individual\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315562127691,"sku":"750230F","price":35.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-12at7_7babc8b5-a0d1-4368-ac64-75e4aa8173a4.jpg?v=1779220504"},{"product_id":"mesa-boogie-valvula-5ar4-rectifier-tube-individual-768647","title":"MESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)","description":"\u003ch1 data-start=\"0\" data-end=\"54\"\u003eMESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)\u003c\/h1\u003e\u003ch3 data-start=\"56\" data-end=\"149\"\u003eVintage rectification with precision: MESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)\u003c\/h3\u003e\u003cp data-start=\"151\" data-end=\"557\"\u003eThe \u003cstrong data-start=\"154\" data-end=\"210\"\u003eMESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)\u003c\/strong\u003e is a highly reliable \u003cstrong data-start=\"218\" data-end=\"243\"\u003erectifier tube\u003c\/strong\u003e designed to provide smooth, stable DC conversion in guitar amplifiers. Its natural behavior delivers a progressive power-up, clean current delivery, and a subtle compression (\"sag\") that adds character to the attack without compromising dynamic response.\u003c\/p\u003e\u003cp data-start=\"559\" data-end=\"787\"\u003eIdeal for guitarists seeking the perfect balance of sensitivity, headroom, and touch response, it retains the classic tone of vintage amplifiers with the durability and consistency of Mesa Boogie quality control.\u003c\/p\u003e\u003chr data-start=\"789\" data-end=\"792\"\u003e\u003ch3 data-start=\"794\" data-end=\"876\"\u003eKey features of the MESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)\u003c\/h3\u003e\u003cp data-start=\"878\" data-end=\"933\"\u003eHigh-voltage rectification with a progressive power-up\u003c\/p\u003e\u003cp data-start=\"935\" data-end=\"979\"\u003eFirm attack with subtle musical compression\u003c\/p\u003e\u003cp data-start=\"981\" data-end=\"1032\"\u003eMesa selection for stability and low microphonics\u003c\/p\u003e\u003cp data-start=\"1034\" data-end=\"1091\"\u003eExtends the life of adjacent power tubes\u003c\/p\u003e\u003cp data-start=\"1093\" data-end=\"1130\"\u003eDirect replacement in an octal socket\u003c\/p\u003e\u003chr data-start=\"1132\" data-end=\"1135\"\u003e\u003ch3 data-start=\"1137\" data-end=\"1216\"\u003eWhat makes the MESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL) special?\u003c\/h3\u003e\u003cp data-start=\"1218\" data-end=\"1526\"\u003eThis tube combines electrical robustness with more controlled current delivery than 5U4 tubes, resulting in less voltage drop and a firmer sense of \"punch.\" It provides more defined character in the lows and mids without hardening the attack, offering a more balanced playing experience.\u003c\/p\u003e\u003chr data-start=\"1626\" data-end=\"1629\"\u003e\u003ch3 data-start=\"1631\" data-end=\"1717\"\u003eTechnical specifications of the MESA BOOGIE 5AR4 RECTIFIER TUBE (INDIVIDUAL)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eType: 5AR4 \/ GZ34 rectifier tube\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Dual vacuum diode\u003c\/li\u003e\n\n\u003cli\u003eBase: Octal (8 pins)\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 5 V\u003c\/li\u003e\n\n\u003cli\u003eFilament current: Approx. 1.9 A\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate reverse voltage: 1550 V\u003c\/li\u003e\n\n\u003cli\u003eAverage DC current: 250 mA\u003c\/li\u003e\n\n\u003cli\u003eTypical voltage drop: 17–20 V at rated load\u003c\/li\u003e\n\n\u003cli\u003ePower-up: Soft (natural warm-up delay)\u003c\/li\u003e\n\n\u003cli\u003eApplication: Power supply for tube amplifiers\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: Direct replacement for 5AR4 \/ GZ34 in specified equipment\u003c\/li\u003e\n\n\u003cli\u003eUnit: Sold individually\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315562160459,"sku":"750504F","price":61.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/5ar4-gz34acf-5__13410.png?v=1779220505"},{"product_id":"mesa-boogie-valvula-5u4gb-rectifier-tube-indiv-768648","title":"MESA BOOGIE 5U4GB RECTIFIER TUBE (INDIVIDUAL)","description":"\u003ch1 data-start=\"0\" data-end=\"50\"\u003eMESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV)\u003c\/h1\u003e\u003ch3 data-start=\"52\" data-end=\"142\"\u003eMore tightness and vintage response with the MESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV)\u003c\/h3\u003e\u003cp data-start=\"144\" data-end=\"606\"\u003eThe \u003cstrong data-start=\"147\" data-end=\"199\"\u003eMESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV)\u003c\/strong\u003e is a selected and tested \u003cstrong data-start=\"207\" data-end=\"232\"\u003erectifier tube\u003c\/strong\u003e designed to ensure reliable startup, consistent voltage drop, and musical “sag” in tube guitar amplifiers. It is intended for users seeking the elastic compression and classic tube rectification attack in rock, blues, and vintage styles, whether live or in the studio, with direct replacement in compatible equipment.\u003c\/p\u003e\u003ch3 data-start=\"608\" data-end=\"686\"\u003eKey features of the MESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eFactory selection and testing for reliability\u003c\/li\u003e\n\n\u003cli\u003eResponse with musical “sag” and natural compression\u003c\/li\u003e\n\n\u003cli\u003eDirect replacement in an octal socket\u003c\/li\u003e\n\n\u003cli\u003eQuiet and stable operation\u003c\/li\u003e\n\n\u003cli\u003eIdeal for compatible high-power amps\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3 data-start=\"905\" data-end=\"980\"\u003eWhat makes the MESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV) special?\u003c\/h3\u003e\u003cp data-start=\"982\" data-end=\"1294\"\u003eIt provides the characteristic voltage drop that rounds off transients and softens the attack, offering a more organic feel compared to diode rectification. Factory quality control ensures consistency between units and reduces premature failures, even on tour or during demanding sessions.\u003c\/p\u003e\u003cp data-start=\"1296\" data-end=\"1379\"\u003e\u003c\/p\u003e\u003ch3 data-start=\"1381\" data-end=\"1463\"\u003eTechnical specifications of the MESA BOOGIE 5U4GB RECTIFIER TUBE (INDIV)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eType: 5U4GB rectifier tube\u003c\/li\u003e\n\n\u003cli\u003eBase: Octal (8 pins)\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 5 V\u003c\/li\u003e\n\n\u003cli\u003eFilament current: approx. 3 A\u003c\/li\u003e\n\n\u003cli\u003ePeak reverse plate voltage: 1550 V max.\u003c\/li\u003e\n\n\u003cli\u003eAverage direct current: 225 mA max.\u003c\/li\u003e\n\n\u003cli\u003eTypical voltage drop at rated load: 44–50 V\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Dual vacuum diode\u003c\/li\u003e\n\n\u003cli\u003eApplication: B+ rectification in guitar amplifiers\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: 5U4G\/GA replacement in specified equipment\u003c\/li\u003e\n\n\u003cli\u003eUnit: Sold individually\u003c\/li\u003e\n\n\u003cli\u003eSelection: Mesa Boogie factory matching and testing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315562193227,"sku":"750541F","price":48.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-rectificadora-5u4gb-valvula_1ec917a6-621b-437a-8188-e96203dcdd66.jpg?v=1779220508"},{"product_id":"mesa-boogie-valvula-5y3-rectifier-tube-indiv-768649","title":"MESA BOOGIE 5Y3 RECTIFIER TUBE (individual)","description":"\u003cul\u003e\n\n\u003cli\u003eMesa Boogie Rectifier 5Y3 Tube.\u003c\/li\u003e\n\n\u003cli\u003eThe MESA BOOGIE 5Y3 tube is a true NOS (New Old Stock) 5Y3 modeled after the original Phillips 5Y3 and is built to Mesa Boogie's exacting specifications for use in their famous Lone Star Special model.\u003c\/li\u003e\n\n\u003cli\u003eThis tube produces a silky and smooth feel on the strings and provides a great sound.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315562225995,"sku":"750770F","price":49.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-valvula-5y3-rectificadora_c348bb34-e6a0-48aa-9f7f-d28cd6061e60.jpg?v=1779220511"},{"product_id":"mesa-boogie-valvula-spax7-individual-768663","title":"MESA BOOGIE SPAX7 TUBE (INDIVIDUAL)","description":"\u003ch1 data-start=\"0\" data-end=\"40\"\u003eMESA BOOGIE SPAX7 VALVE (INDIVIDUAL)\u003c\/h1\u003e\u003ch3 data-start=\"42\" data-end=\"121\"\u003eMaximum stability and silence with the MESA BOOGIE SPAX7 VALVE (INDIVIDUAL)\u003c\/h3\u003e\u003cp data-start=\"123\" data-end=\"571\"\u003eThe \u003cstrong data-start=\"126\" data-end=\"168\"\u003eMESA BOOGIE SPAX7 VALVE (INDIVIDUAL)\u003c\/strong\u003e is a 12AX7-type \u003cstrong data-start=\"176\" data-end=\"197\"\u003epreamp tube\u003c\/strong\u003e specially selected and treated to offer the lowest microphonics, minimum noise, and maximum durability. It is designed for high-gain amplifiers or recording environments where tonal stability and vibration reduction are essential. Each unit undergoes a testing and selection process more rigorous than standard Mesa tubes.\u003c\/p\u003e\u003ch3 data-start=\"576\" data-end=\"644\"\u003eKey features of the MESA BOOGIE SPAX7 VALVE (INDIVIDUAL)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003ePremium 12AX7 selection with ultra-low noise level\u003c\/li\u003e\n\n\u003cli\u003eMicrophonics and gain testing under real conditions\u003c\/li\u003e\n\n\u003cli\u003eInternal shielding with a metal “damping shield”\u003c\/li\u003e\n\n\u003cli\u003eGreater reliability in high-gain or reverb amps\u003c\/li\u003e\n\n\u003cli\u003eDirect replacement in any 12AX7 preamp socket\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\u003ch3 data-start=\"933\" data-end=\"998\"\u003eWhat makes the MESA BOOGIE SPAX7 VALVE (INDIVIDUAL) special?\u003c\/h3\u003e\u003cp data-start=\"1000\" data-end=\"1370\"\u003eUnlike standard 12AX7 tubes, each SPAX7 undergoes an individual control process that includes vibration, noise, and microphonics testing. This guarantees quieter and more stable operation even at high volume or under stage conditions. It is ideal for the first preamp position (V1), where noise and sensitivity are most critical.\u003c\/p\u003e\u003ch3 data-start=\"1464\" data-end=\"1536\"\u003eTechnical specifications of the MESA BOOGIE SPAX7 VALVE (INDIVIDUAL)\u003c\/h3\u003e\u003cul\u003e\n\n\u003cli\u003eType: Low-microphonics 12AX7A \/ ECC83S\u003c\/li\u003e\n\n\u003cli\u003eBase: Noval (9 pins)\u003c\/li\u003e\n\n\u003cli\u003eConfiguration: Dual high-gain triode\u003c\/li\u003e\n\n\u003cli\u003eFilament voltage: 6.3 V at 300 mA or 12.6 V at 150 mA\u003c\/li\u003e\n\n\u003cli\u003eAmplification factor (µ): 100\u003c\/li\u003e\n\n\u003cli\u003eTransconductance: Approx. 1.6 mA\/V\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate voltage: 300 V\u003c\/li\u003e\n\n\u003cli\u003eMaximum plate dissipation: 1 W per triode\u003c\/li\u003e\n\n\u003cli\u003eInternal damping: SPAX7 Shield metal shielding\u003c\/li\u003e\n\n\u003cli\u003eRecommended use: First preamp position (V1), reverb driver, high-gain channel\u003c\/li\u003e\n\n\u003cli\u003eCompatibility: Direct replacement for 12AX7 \/ ECC83 in specified equipment\u003c\/li\u003e\n\n\u003cli\u003eNoise level: Ultra-low (Mesa “SPAX” selection)\u003c\/li\u003e\n\n\u003cli\u003eSales unit: Individual\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"MESA BOOGIE","offers":[{"title":"Default Title","offer_id":57315563766091,"sku":"750151F","price":38.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/0955\/7067\/files\/mesa-boogie-spax7-a_d2cb1deb-270a-4c16-bd77-50af739ef874.jpg?v=1779220538"}],"url":"https:\/\/microfusa.com\/en\/collections\/valvulas.oembed","provider":"microFusa","version":"1.0","type":"link"}