{"product_id":"pw-audio-adapter-brass-chassis-turning-box-for-ak-sp4000-dap-2-versions","title":"PW Audio Adapter Brass Chassis Turning Box for AK SP4000 DAP 2 Versions","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch1\u003ePW Audio Adapter Turning Box for Astell \u0026amp; Kern AK SP4000 Digital Audio Player\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003ePW Audio Adapter Turning Box\u003c\/strong\u003e for Astell \u0026amp; Kern AK SP4000 exemplifies PW Audio’s design ethos — “crafted with heart, listened with passion.” Whether in entry-level or flagship models, the brand continues its mission to connect listeners with the warmth and authenticity of music. This brass-bodied tuning box perfectly embodies PW Audio’s philosophy: refining music from within through material quality, design precision, and heartfelt craftsmanship.\u003c\/p\u003e\n\u003ch2\u003eDesign Philosophy\u003c\/h2\u003e\n\u003cp\u003eMoving beyond conventional aluminum housings, the \u003cstrong\u003eSP4000 Adapter Turning Box\u003c\/strong\u003e features a high-density \u003cstrong\u003ebrass chassis\u003c\/strong\u003e — a choice that significantly enhances both structural durability and sonic texture. Brass offers superior resonance control and electromagnetic interference suppression, ensuring blacker backgrounds, refined quietness, and rich sonic layering. The result is a tonal presentation that feels organic, dynamic, and vividly detailed.\u003c\/p\u003e\n\u003ch2\u003eAcoustic Characteristics\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003ebrass shell\u003c\/strong\u003e adds warmth and body across the frequency spectrum. Midrange reproduction is smooth and full, bass notes reach deeper yet remain controlled, while treble maintains exquisite finesse without harshness. This combination yields a pure, natural sound that appeals to both discerning audiophiles and music lovers chasing emotional connection through sound.\u003c\/p\u003e\n\u003ch2\u003ePrecision Engineering\u003c\/h2\u003e\n\u003cp\u003eBuilt using \u003cstrong\u003e3D printing technology\u003c\/strong\u003e, the adapter features a precision-designed internal framework to control micro-vibration and microphonic interference. This ensures superb purity and sonic stability. The terminals utilize \u003cstrong\u003eberyllium-copper 4.4mm gold-plated balanced connectors\u003c\/strong\u003e for enhanced conductivity and resilience, alongside a \u003cstrong\u003ebrass 3.5mm gold-plated single-ended jack\u003c\/strong\u003e that delivers a natural, warm tone.\u003c\/p\u003e\n\u003ch2\u003eVersions \u0026amp; Sound Profiles\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrpheus Ver.:\u003c\/strong\u003e Tuned for ultimate detail and airiness. Ideal for classical, jazz, vocal, and acoustic music. This version accentuates micro-detail — capturing breath nuances, subtle string vibrations, and vivid live atmosphere. Expect a wide soundstage, exceptional layering, and silky high-end extension that’s never fatiguing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference Ver.:\u003c\/strong\u003e Balanced, precise, and fast. Perfect for pop, rock, electronic, and orchestral genres. Offers excellent transient response, clear contours, powerful yet clean bass impact, and pinpoint imaging with dynamic control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; height: 237.125px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 19.5938px;\"\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 19.5938px;\"\u003ePW Audio Adapter Turning Box for Astell\u0026amp;Kern SP4000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 39.1875px;\"\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 39.1875px;\"\u003eHigh-density brass chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 19.5938px;\"\u003e\u003cstrong\u003eInternal Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 19.5938px;\"\u003e3D-printed vibration-controlled support architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 39.1875px;\"\u003e\u003cstrong\u003eConnectors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 39.1875px;\"\u003e4.4mm gold-plated beryllium copper (balanced) \/ 3.5mm gold-plated brass (single-ended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5938px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 21.5938px;\"\u003e\u003cstrong\u003eVariants\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 21.5938px;\"\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eOrpheus\u003c\/strong\u003e\u003c\/span\u003e Version \/ \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eReference\u003c\/strong\u003e\u003c\/span\u003e Version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 39.1875px;\"\u003e\u003cstrong\u003eRecommended For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 39.1875px;\"\u003eAstell \u0026amp; Kern AK SP4000 Digital Audio Player\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 39.1875px;\"\u003e\u003cstrong\u003eSound Signature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 39.1875px;\"\u003eRefined, natural, warm tonality with deep bass and expansive stage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 22.7652%; height: 19.5938px;\"\u003e\u003cstrong\u003eManufacturing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74.1755%; height: 19.5938px;\"\u003eHandcrafted by PW Audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhy Choose PW Audio?\u003c\/h2\u003e\n\u003cp\u003ePW Audio believes that music is more than just sound — it’s emotion, temperature, and memory. Each product aims to bring warmth and humanity back to listening experiences dominated by numbers and data. Choosing PW Audio means embracing passion, craftsmanship, and devotion to the art of sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBring your Astell \u0026amp; Kern AKSP4000 to life with the PW Audio Adapter Turning Box — precision, power, and poetry in one.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"PW Audio","offers":[{"title":"Orpheus Version","offer_id":51605429322022,"sku":null,"price":895.95,"currency_code":"EUR","in_stock":true},{"title":"Reference Version","offer_id":51605429354790,"sku":null,"price":447.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0289\/2641\/0840\/files\/559889509_1123400163275125_281541855285860948_n.jpg?v=1761296349","url":"https:\/\/www.accessoryjack.com\/en-de\/products\/pw-audio-adapter-brass-chassis-turning-box-for-ak-sp4000-dap-2-versions","provider":"AccessoryJack","version":"1.0","type":"link"}