{"product_id":"sgc-300w-linear-power-supply","title":"SGC 300W Linear Power Supply","description":"\u003cstyle\u003e\n:root{--sg-surface:#f8fbf5;--sg-surface-2:#fff;--sg-offset:#e7efe1;--sg-border:rgba(46,84,45,.14);--sg-divider:rgba(46,84,45,.09);--sg-text:#16301a;--sg-muted:#4f6650;--sg-faint:#7b8f7a;--sg-primary:#456b49;--sg-inverse:#f6faf4;--sg-radius:1.25rem;--sg-radius-xl:1.75rem}\n.sgc-desc{font-family:'Inter',system-ui,sans-serif;color:var(--sg-text);line-height:1.6}\n.sgc-eyebrow{font-size:.75rem;letter-spacing:.12em;text-transform:uppercase;color:var(--sg-faint);margin-bottom:.75rem}\n.sgc-hero{background:var(--sg-surface);border:1px solid var(--sg-border);border-radius:var(--sg-radius-xl);padding:2rem;margin-bottom:1.5rem}\n.sgc-hero h2{font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.1;letter-spacing:-.03em;margin-bottom:.75rem;color:var(--sg-text)}\n.sgc-hero p{color:var(--sg-muted);max-width:62ch;margin-bottom:1.25rem}\n.sgc-mini-specs{display:grid;grid-template-columns:repeat(3,1fr);gap:.75rem}\n.sgc-mini-specs div{background:var(--sg-surface-2);border:1px solid var(--sg-border);border-radius:var(--sg-radius);padding:.875rem}\n.sgc-mini-specs span{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--sg-faint);margin-bottom:.25rem}\n.sgc-mini-specs strong{font-size:.85rem;color:var(--sg-text)}\n.sgc-section{margin-bottom:1.5rem}\n.sgc-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:.875rem;margin-top:1rem}\n.sgc-card{background:var(--sg-surface);border:1px solid var(--sg-border);border-radius:var(--sg-radius-xl);padding:1.25rem}\n.sgc-card h4{font-size:.95rem;margin-bottom:.4rem;letter-spacing:-.01em;color:var(--sg-text)}\n.sgc-card p{font-size:.875rem;color:var(--sg-muted)}\n.sgc-spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;margin-top:1rem}\n.sgc-spec-card{background:var(--sg-surface);border:1px solid var(--sg-border);border-radius:var(--sg-radius);padding:1rem}\n.sgc-spec-card span{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--sg-faint);margin-bottom:.25rem}\n.sgc-spec-card strong{font-size:.9rem;display:block;margin-bottom:.2rem;color:var(--sg-text)}\n.sgc-spec-card p{font-size:.8rem;color:var(--sg-muted)}\n.sgc-quote{background:linear-gradient(135deg,var(--sg-primary),#5a8a5f);color:var(--sg-inverse);border-radius:var(--sg-radius-xl);padding:1.75rem;margin-top:1.5rem}\n.sgc-quote h3{font-size:1.15rem;letter-spacing:-.02em;margin-bottom:.5rem}\n.sgc-quote p{font-size:.875rem;color:rgba(246,250,244,.78)}\n@media(max-width:640px){.sgc-cards,.sgc-spec-grid,.sgc-mini-specs{grid-template-columns:1fr}}\n\u003c\/style\u003e\n\u003cdiv class=\"sgc-desc\"\u003e\n  \u003cdiv class=\"sgc-hero\"\u003e\n    \u003cdiv class=\"sgc-eyebrow\"\u003eSmall Green Computer — 300W linear power\u003c\/div\u003e\n    \u003ch2\u003ePower your whole system from one quiet box.\u003c\/h2\u003e\n    \u003cp\u003eThe SGC 300W Linear Power Supply powers your entire audio system from a single, ultra-quiet chassis. Four fully independent output rails — 19V, 12V, and two variable — with no shared ground, no switching noise, and no compromise.\u003c\/p\u003e\n    \u003cdiv class=\"sgc-mini-specs\"\u003e\n      \u003cdiv\u003e\n\u003cspan\u003eTotal power\u003c\/span\u003e\u003cstrong\u003e300W\u003c\/strong\u003e\n\u003c\/div\u003e\n      \u003cdiv\u003e\n\u003cspan\u003eIndependent outputs\u003c\/span\u003e\u003cstrong\u003e4 rails\u003c\/strong\u003e\n\u003c\/div\u003e\n      \u003cdiv\u003e\n\u003cspan\u003eTransformer\u003c\/span\u003e\u003cstrong\u003eSilent R-Core\u003c\/strong\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sgc-section\"\u003e\n    \u003cdiv class=\"sgc-eyebrow\"\u003eWhy it matters\u003c\/div\u003e\n    \u003cdiv class=\"sgc-cards\"\u003e\n      \u003cdiv class=\"sgc-card\"\u003e\n        \u003ch4\u003eTrue separate rail design.\u003c\/h4\u003e\n        \u003cp\u003eNo shared ground between outputs. No cross-RFI or EMI interference between devices. Each rail operates independently at full rated current.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"sgc-card\"\u003e\n        \u003ch4\u003eSilent R-Core transformer.\u003c\/h4\u003e\n        \u003cp\u003e300W of clean, low-ripple power with top-of-the-line ELNA audiophile capacitors. No high-frequency switching noise — ever.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"sgc-card\"\u003e\n        \u003ch4\u003ePowers server, player, and endpoints together.\u003c\/h4\u003e\n        \u003cp\u003e+19V\/10A for sonicTransporter, +12V\/10A for Roon Nucleus, and two variable rails (3.3V–15V\/3A) for Rendu players and accessories.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sgc-section\"\u003e\n    \u003cdiv class=\"sgc-eyebrow\"\u003eSpecifications\u003c\/div\u003e\n    \u003cdiv class=\"sgc-spec-grid\"\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eOutput 1\u003c\/span\u003e\u003cstrong\u003e+19V @ 10A\u003c\/strong\u003e\u003cp\u003eFor sonicTransporter i5\/i7\/i9, NUC, Roon Nucleus.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eOutput 2\u003c\/span\u003e\u003cstrong\u003e+12V @ 10A\u003c\/strong\u003e\u003cp\u003eFor 12V music servers and high-current devices.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eOutputs 3 \u0026amp; 4\u003c\/span\u003e\u003cstrong\u003e3.3V \/ 5V \/ 7.5V \/ 9V \/ 12V \/ 15V @ 3A each\u003c\/strong\u003e\u003cp\u003eVariable outputs. 7.5V ideal for microRendu, ultraRendu, and ultraDigital.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eTransformer\u003c\/span\u003e\u003cstrong\u003eSilent R-Core, 300W\u003c\/strong\u003e\u003cp\u003eLow-ripple, low-noise. ELNA audiophile-grade filter capacitors.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eInput\u003c\/span\u003e\u003cstrong\u003e110V\/220V AC autoselect\u003c\/strong\u003e\u003cp\u003eIEC input with EMI filter. Idle power under 4W.\u003c\/p\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"sgc-spec-card\"\u003e\n\u003cspan\u003eDimensions\u003c\/span\u003e\u003cstrong\u003e320 × 215 × 85mm, 10 kg\u003c\/strong\u003e\u003cp\u003eFuse: 6A fast blow 5×20mm. Cables for XLR, 5.5×2.5mm, and 5.5×2.1mm included.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sgc-quote\"\u003e\n    \u003ch3\u003eOne supply. Your whole system. Complete silence.\u003c\/h3\u003e\n    \u003cp\u003eThe SGC 300W Linear Power Supply is the foundation every serious digital system deserves — clean, independent DC power for every component, from a single chassis that operates in complete silence.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Small Green Computer","offers":[{"title":"Default Title","offer_id":51755604508960,"sku":"SGC-PSU300W","price":740.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/8670\/files\/300W.LPSU.Black.jpg?v=1780063430","url":"https:\/\/www.smallgreencomputer.com\/products\/sgc-300w-linear-power-supply","provider":"Small Green Computer","version":"1.0","type":"link"}