{"product_id":"astell-kern-sp4000-portable-music-player","title":"Astell \u0026 Kern SP4000 Portable Music Player","description":"Supporting PCM playback up to 32-bit\/768kHz and native DSD512, the Astell \u0026amp; Kern SP4000 features a full Android OS with Google Play Store access for streaming services like Tidal, Qobuz, Spotify, and Apple Music, plus Wi-Fi and high-resolution Bluetooth (LDAC, aptX HD). This flagship digital audio player utilizes a 1:1 Quad DAC architecture pairing four AK4191 digital processors with four AK4499EX DACs. Built in a 904L stainless steel chassis, it features a 6-inch 2K touchscreen, 256GB internal storage expandable via microSD up to 1.5TB, High Driving Mode, and 3.5mm unbalanced and 4.4mm balanced outputs.  \n\nReviews highlight the SP4000 for its exceptional clarity, expansive soundstage, and silent background across sensitive IEMs and demanding headphones. Reviewers applaud the full Android operating system for smooth app integration, alongside the responsive interface and vivid 2K display. While noted as a heavy unit, consensus holds that its unmatched dynamic detail, refined musicality, and high-power output establish it as a premier reference player.  \n\nBringing desktop-grade audio performance into a luxurious portable format, the SP4000 pairs state-of-the-art decoding with unrestricted streaming flexibility. Listeners seeking ultimate sonic precision, master-tier craftsmanship, and the power to effortlessly drive any headphone will find this flagship player to be the ultimate centerpiece for high-fidelity personal listening.","brand":"The Music Room","offers":[{"title":"Default Title","offer_id":53133904904473,"sku":"99317","price":3499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/99317-4.jpg?v=1789084326","url":"https:\/\/tmraudio.com\/products\/astell-kern-sp4000-portable-music-player","provider":"The Music Room","version":"1.0","type":"link"}