{"product_id":"riverstone-audio-jan-5654w-platinum-grade-matched-pair","title":"Riverstone Audio JAN 5654W Platinum Grade Matched Pair","description":"\u003cp\u003e\u003cstrong\u003eRiverstone Audio JAN 5654W Platinum Grade matched pair are fully-tested, low-noise 7-pin vacuum tubes selected for premium audio performance and reliability.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThese are refurbished New Old Stock (NOS) JAN 5654W double triodes offered as a tested and matched pair for hobbyists and audiophiles upgrading vintage and modern equipment that accepts 7-pin 6AK5 \/ 6J1 \/ EF95 family tubes. Each pair is measured for plate current and mutual conductance, life-tested, and supplied with data labels showing the exact measured ip and Gm values. Riverstone Audio backs these Platinum Grade pairs with a two-year warranty for added confidence.\u003c\/p\u003e\n\n\u003ch3\u003eWhat makes this JAN 5654W Platinum Grade pair different from regular tubes?\u003c\/h3\u003e\n\u003cp\u003eThese tubes are hand-selected from NOS stock and matched to tight tolerances to reduce channel imbalance and noise. They meet stringent electrical thresholds and pass an audio-focused life test to ensure usable service life and consistent sonic behavior.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatched within 3% for plate current (ip) and mutual conductance (Gm)\u003c\/li\u003e\n  \u003cli\u003eGuaranteed Gm at or above 4500 micro-mho and ip ≥ 6.6 mA\u003c\/li\u003e\n  \u003cli\u003eSpecialized life and audio sound testing performed on each tube\u003c\/li\u003e\n  \u003cli\u003eProvided with individual data labels showing measured values\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will these tubes affect my amplifier’s sound and performance?\u003c\/h3\u003e\n\u003cp\u003eWhen used as direct replacements for compatible 7-pin tubes, the JAN 5654W Platinum pair can tighten stereo imaging, reduce background hiss, and provide more consistent gain between channels. The strict matching helps prevent imbalance-related artifacts in preamp and driver stages.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower noise floor thanks to NOS selection and testing\u003c\/li\u003e\n  \u003cli\u003eBetter channel matching for stereo systems and split stages\u003c\/li\u003e\n  \u003cli\u003eReliable electrical performance across playback sessions\u003c\/li\u003e\n  \u003cli\u003eData labels let you confirm the actual tested parameters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich equipment can safely use these 5654W tubes?\u003c\/h3\u003e\n\u003cp\u003eThese JAN 5654W tubes are appropriate only as direct replacements for compatible 7-pin tubes in devices that list 6AK5, 6J1, 6J1P, 6J1P-EB, 6Zh1P-EV, 6AK5W or EF95 as acceptable. Installing the wrong tube type can damage your amplifier; always check the manufacturer’s substitution guidance first.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIntended for devices specifying 7-pin 5654\/6AK5\/6J1\/EF95 family tubes\u003c\/li\u003e\n  \u003cli\u003eNot a universal 7-pin substitute — verify compatibility before fitting\u003c\/li\u003e\n  \u003cli\u003eIdeal for preamps, RF stages, and vintage audio gear requiring low-noise tubes\u003c\/li\u003e\n  \u003cli\u003eManufacturer-approved substitutes only; otherwise risk equipment damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow can I verify authenticity and markings on vintage JAN 5654W tubes?\u003c\/h3\u003e\n\u003cp\u003eMany original JAN 5654W tubes were etched with \"5654\" and \"USA\" into the glass; later silk-screened green markings may be faded due to age. Riverstone Audio includes clear data labels and photographs with each pair so you can confirm identity and measured performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLook for etched \"5654\" and \"USA\" on the glass envelope\u003c\/li\u003e\n  \u003cli\u003eGreen silk-screen print may be partially missing on older tubes\u003c\/li\u003e\n  \u003cli\u003eRiverstone data labels provide measured ip and Gm for transparency\u003c\/li\u003e\n  \u003cli\u003ePhotos and measurements included to validate authenticity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This Platinum Grade JAN 5654W matched pair from Riverstone Audio is aimed at audiophiles, repair technicians, and vintage-electronics collectors who need matched, low-noise 7-pin replacement tubes with documented test results. If your amplifier or preamp requires a 5654 \/ 6AK5 \/ 6J1 \/ EF95 family tube and you want tightly matched, NOS-level performance with a two-year warranty, these tubes are a suitable upgrade. If you are unsure about compatibility, consult your equipment manual or a qualified technician before installing.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these JAN 5654W tubes matched?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — each Platinum Grade pair is matched within 3% for plate current and Gm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these as direct replacements for any 7-pin tube?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — use only in equipment specifying 5654\/6AK5\/6J1\/EF95 family tubes; check manufacturer guidance.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Riverstone Audio","offers":[{"title":"Default Title","offer_id":48413427105949,"sku":"B01BFJDTW0","price":53.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/9596\/1757\/files\/riverstone-audio-front-packaging.jpg?v=1781265081","url":"https:\/\/nexoltic.com\/products\/riverstone-audio-jan-5654w-platinum-grade-matched-pair","provider":"Nexoltic","version":"1.0","type":"link"}