{"product_id":"astell-kern-a-ultima-sp4000-high-end-flagship-digital-audio-player-silver","title":"Astell\u0026Kern - A\u0026ultima SP4000 – High-end Flagship Digital Audio Player – Silver","description":"\u003cstyle\u003e#html-body [data-pb-style=GMTWT6G]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}#html-body [data-pb-style=AB8AJY1],#html-body [data-pb-style=HEARQYU],#html-body [data-pb-style=VDC5VNW]{padding-top:25px}#html-body [data-pb-style=AB8AJY1],#html-body [data-pb-style=HEARQYU],#html-body [data-pb-style=HNHJ6S6],#html-body [data-pb-style=VDC5VNW]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}#html-body [data-pb-style=ND5VYV5]{padding-top:25px}#html-body [data-pb-style=IM6Q7R0],#html-body [data-pb-style=ND5VYV5],#html-body 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[data-pb-style=LQMR3RJ],#html-body [data-pb-style=VHN1VSU]{max-width:100%;height:auto}#html-body [data-pb-style=XHGDBW3]{border-style:none}#html-body [data-pb-style=E89CV7X],#html-body [data-pb-style=Q19R05G]{max-width:100%;height:auto}#html-body [data-pb-style=BFAUX75]{border-style:none}#html-body [data-pb-style=GKNK8I8],#html-body [data-pb-style=IM1UJEF]{max-width:100%;height:auto}#html-body [data-pb-style=GCBT7NX]{border-style:none}#html-body [data-pb-style=MBEALSN],#html-body [data-pb-style=TTW9K0T]{max-width:100%;height:auto}@media only screen and (max-width: 768px) { #html-body [data-pb-style=BFAUX75],#html-body [data-pb-style=C8O858J],#html-body [data-pb-style=GCBT7NX],#html-body [data-pb-style=IM88RH8],#html-body [data-pb-style=JF6N7U0],#html-body [data-pb-style=OE927AT],#html-body [data-pb-style=PGXK0SF],#html-body [data-pb-style=S8THIRF],#html-body [data-pb-style=XHGDBW3]{border-style:none} }\u003c\/style\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"GMTWT6G\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"MIMXBTY\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"PV8TQIF\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"full-height\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"BSV93JL\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"OE927AT\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"OGEY8YN\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_1.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"GOSN2XO\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eBuilt on Legacy, Evolving Perfection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp id=\"T37VAK5\"\u003eThe A\u0026amp;ultima SP4000 is Astell\u0026amp;Kern’s newest flagship digital audio player, the result of three years of relentless research and innovation following the development of the SP3000.\u003c\/p\u003e\n\u003cp\u003eAs part of the A\u0026amp;ultima series—Astell\u0026amp;Kern’s flagship line-up combining cutting-edge technology and top-tier specifications—the SP4000 surpasses the boundaries set by the SP3000, once regarded as the ultimate reference.\u003c\/p\u003e\n\u003cp\u003eBuilt upon an advanced Octa audio circuit architecture, the SP4000 distils the purest essence of audio engineering, delivering a sound experience unlike anything before it—refined, powerful, and remarkably close to perfection. Discover the SP4000 and experience sound on an entirely new level.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"VDC5VNW\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"TMWT1M1\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"OVYE6OT\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"BET62E4\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eFull Android OS Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAstell\u0026amp;Kern has overcome Android OS’s sampling limitation (SRC) through its proprietary customization technology, ADP (Astell\u0026amp;Kern Direct Path). This allows for bit-perfect, lossless playback even in streaming environments, ensuring the highest possible sound quality during music listening.\u003c\/p\u003e\n\u003cp\u003eIn response to the growing shift toward streaming-based music consumption, Astell\u0026amp;Kern has integrated full Android OS for the first time. The SP4000 not only delivers flagship-level audio quality but also offers enhanced convenience, marking its evolution into a highly refined next-generation digital audio player.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"FNCHGES\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"S8THIRF\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"Q5WBBUE\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_9_.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"HEARQYU\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"Y3RD3BC\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"HFWICE0\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"QMLWF4D\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"JF6N7U0\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"FBNO3GX\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0968\/0941\/9094\/files\/SP4000_Case_0.25x.png?v=1773413704\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"LUBLY7L\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh-End Shrunken Calfskin Case\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SP4000 is packaged with a premium leather case crafted from Shrunken Calf by Perlinger, Germany’s world-renowned leather house. Founded in 1864 and spanning five generations of craftsmanship, Perlinger supplies the finest leather to luxury brands across the globe—blending time-honoured tradition with modern techniques.\u003c\/p\u003e\n\u003cp\u003eThe Shrunken Calf leather used in the case is made from the soft, delicate hide of calves under one year old. It is processed using a chrome tanning method to preserve its natural texture, then uniquely shrunk using special agents—not heat—to retain its organic grain and wrinkles.\u003c\/p\u003e\n\u003cp\u003eFollowing an aniline dyeing process, Perlinger’s proprietary pigments are added to achieve a deep, vibrant color. Their advanced anti-aging treatment ensures that this richness lasts over time, complementing the SP4000 with a leather case that embodies lasting beauty, durability, and luxury.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"AB8AJY1\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"YL9XJ49\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"ONIDTEL\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"GULFA05\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh Driving Mode\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SP4000 features twice as many OPAMPs arranged in parallel compared to its predecessor, delivering richer and more detailed sound. High Driving Mode provides powerful and stable output—much like a four-wheel-drive vehicle confidently navigating rough terrain. It’s designed to reproduce even the most delicate sonic details with precision, allowing you to enjoy deeper, clearer, and more immersive music.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"full-height\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"AHRA8AH\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"PGXK0SF\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"C435HK2\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_5_.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"HNHJ6S6\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"AYSUPXR\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"J9N5ORN\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"RXB7CDD\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"IM88RH8\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"UGEVBJT\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_1_.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"JF4IO1U\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eOcta Audio Circuit Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn the SP3000, the digital-to-analog signal processing structure was separated in a 1:2 ratio. With the SP4000, it has evolved into a 1:1 architecture.\u003c\/p\u003e\n\u003cp\u003eThis new structure, where one AK4191 digital processor is paired with one AK4499EX DAC, allows digital signals to be delivered precisely to a single DAC without the need to distribute noise, enabling improved signal separation and processing.\u003c\/p\u003e\n\u003cp\u003eThrough continuous research and innovation in circuit technology, the SP4000 successfully implements a true Quad DAC—a feat previously considered impossible due to noise and other issues. As a result, the SP4000 achieves an impressive SNR (Signal-to-Noise Ratio) of 131dB, on par with the independent dual audio circuit of its predecessor.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"ND5VYV5\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"VASAG11\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"EY11K75\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"NXY4LVC\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh Driving Mode\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SP4000 features twice as many OPAMPs arranged in parallel compared to its predecessor, delivering richer and more detailed sound. High Driving Mode provides powerful and stable output—much like a four-wheel-drive vehicle confidently navigating rough terrain. It’s designed to reproduce even the most delicate sonic details with precision, allowing you to enjoy deeper, clearer, and more immersive music.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"full-height\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"F3GM7PF\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"C8O858J\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"LQMR3RJ\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0968\/0941\/9094\/files\/SP3000-5.png?v=1773401117\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"Q5L26KF\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"NT5IFLD\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"KXSBM7M\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"ULJ5JHS\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"XHGDBW3\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"Q19R05G\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_8_.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"P3I415V\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong id=\"WLTRKNN\"\u003eProprietary ESA (Enhanced Signal Alignment) technology\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SP4000 features proprietary ESA (Enhanced Signal Alignment) technology, which significantly improves one of audio’s long-standing challenges—group delay. ESA technology aligns frequency signals to arrive more uniformly, minimizing frequency distortion and dramatically enhancing sound clarity and purity.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"RHL6SCF\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"Q0YOX0M\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"WRS6YOG\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"FO1533B\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eUltra Low Noise LDO Regulator\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SP4000 features a newly implemented LDO (Low Dropout) Regulator in its power supply,which reduces noise by up to 97% compared to previous models. LDO Regulators are high-performance components typically used in precision medical devices and 5G communication equipment. They help stabilize battery voltage and effectively suppress noise, resulting in cleaner, purer sound.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"full-height\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"CVA3VCN\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"BFAUX75\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"IM1UJEF\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_4_.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003cdiv data-appearance=\"contained\" data-content-type=\"row\" data-element=\"main\"\u003e\u003cdiv data-background-images=\"{}\" data-background-type=\"image\" data-element=\"inner\" data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-pb-style=\"IM6Q7R0\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-loop=\"true\" data-video-play-only-visible=\"true\"\u003e\u003cdiv class=\"pagebuilder-column-group\" data-appearance=\"default\" data-background-images=\"{}\" data-content-type=\"column-group\" data-element=\"main\" data-grid-size=\"12\" data-pb-style=\"NE828FS\"\u003e\u003cdiv class=\"pagebuilder-column-line\" data-content-type=\"column-line\" data-element=\"main\" data-pb-style=\"DMXYXES\"\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"PPQ2P4V\"\u003e\u003cfigure data-appearance=\"full-width\" data-content-type=\"image\" data-element=\"main\" data-pb-style=\"GCBT7NX\"\u003e\u003cimg alt=\"\" class=\"pagebuilder-mobile-only\" data-element=\"mobile_image\" data-pb-style=\"MBEALSN\" src=\"https:\/\/homeavdirect.co.uk\/media\/wysiwyg\/Adobe_Express_-_file_8__1.jpg\" title=\"\"\u003e\u003c\/figure\u003e\u003c\/div\u003e\n\u003cdiv class=\"pagebuilder-column\" data-appearance=\"align-center\" data-background-images=\"{}\" data-content-type=\"column\" data-element=\"main\" data-pb-style=\"V2P2I7H\"\u003e\u003cdiv data-appearance=\"default\" data-content-type=\"text\" data-element=\"main\"\u003e\n\u003ch3\u003e\u003cstrong\u003eAny Layer HDI PCB\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTo achieve the highest sound quality, the SP4000 incorporates top-tier Any Layer HDI (High-Density Interconnect) PCB technology. Commonly used in smartphones and high-performance electronic devices, this advanced circuit board allows for the precise design of complex circuitry within a compact space. It minimizes signal loss, enabling the delivery of a more refined and detailed sound.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Astell\u0026Kern","offers":[{"title":"Default Title","offer_id":52193519567190,"sku":"AKP22","price":3799.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/0941\/9094\/files\/sp4000_silver_001_1.jpg?v=1767299306","url":"https:\/\/www.homeavdirect.co.uk\/products\/astell-kern-a-ultima-sp4000-high-end-flagship-digital-audio-player-silver","provider":"Home AV Direct","version":"1.0","type":"link"}