Astell&Kern – A&ultima SP4000

Astell&Kern A&ultima SP4000 The New Standard in Flagship Portable Audio The Astell&Kern A&ultima SP4000 is Astell&Kern’s most advanced digital audio player to date. Crafted after three years of continuous innovation since the landmark SP3000. It redefines what’s possible in portable high-resolution playback, delivering a sound that’s refined, powerful, and remarkably true to the original recording. From its advanced circuitry to its luxurious design, the SP4000 is engineered to exceed the expectations of the most discerning audiophiles. Enhanced Signal Processing with Octa Audio Architecture, a key feature of the Astell&Kern A&ultima SP4000 At the heart of the AK SP4000 is a revolutionary new signal design: a 1:1 pairing of AK4191 digital processors and AK4499EX DACs, forming a true Quad DAC architecture. This configuration eliminates noise-causing signal splitting and achieves a new level of separation and clarity. By processing digital and analog signals independently—with the AK4191EQ handling digital modulation and the AK4499EX dedicated to analog conversion—the SP4000 minimizes interference and delivers sound that is detailed, pure, and deeply immersive. High Driving Mode – Power Meets Precision with the Astell&Kern A&ultima SP4000 Utilizing a parallel OPAMP configuration, the SP4000 expands its driving power without raising the noise floor. This ensures higher dynamic range and stunning detail retrieval. This High Driving Mode delivers a stable, confident output—capable of driving even demanding headphones with authority—while preserving nuance and emotional impact across all genres. ESA Technology – Group Delay, Solved, with the Astell&Kern A&ultima SP4000 in mind Astell&Kern’s proprietary Enhanced Signal Alignment (ESA) technology addresses the long-standing issue of group delay by ensuring that all frequency signals arrive in perfect sync. This dramatically improves timing, stereo imaging, and clarity, offering a listening experience that feels immediate, lifelike, and coherent. Ultra Low Noise LDO Regulator in the Astell&Kern A&ultima SP4000 A newly designed Low Dropout (LDO) Regulator reduces power-related noise by up to 97% over previous models. Borrowed from high-precision medical and 5G tech, this advanced component ensures maximum voltage stability and near-silent operation—paving the way for unparalleled sound purity. Advanced DAR & VSE – Digitally Refined, Emotionally Real The second-generation DAR (Digital Audio Remaster) system debuts in the SP4000, featuring a two-step enhancement process. First, Virtual Sound Extender (VSE) restores lost harmonics and natural texture. Then, the DAR engine performs high-precision upsampling for a more refined output. Together, they deliver sound that is organic, engaging, and remarkably faithful to the source. Full Android OS with Bit-Perfect Streaming for the Astell&Kern A&ultima SP4000 For the first time, an Astell&Kern player supports the Google Play Store, offering seamless access to your favorite streaming apps. A&K’s Direct Path (ADP) technology bypasses Android’s SRC limitations, ensuring bit-perfect, lossless playback—even while streaming—so you never compromise on sound quality. Premium Build, Inside and Out, the mark of Astell&Kern A&ultima SP4000 excellence • Any Layer HDI PCB: Enables compact, high-density circuitry with minimal signal loss • 99.9% Pure Copper Shield Can: Exceptional electromagnetic shielding for ultra-clean audio • 6” 2160×1080 Full HD Display: Sharp, vibrant UI with improved battery efficiency All-New 4.5 Generation UI – Intuitive Meets Beautiful The redesigned interface brings music to life with an elegant LP-style album browser and the signature Crimson Theme. Built on the principles of Edge, Simple, and Sensibility, the UI blends visual clarity with user comfort, reducing eye strain while elevating the emotional connection to your music. Luxury Leather Case by Perlinger, Germany – a perfect match for the Astell&Kern A&ultima SP4000 Each Astell&Kern SP4000 comes with a premium case made from Shrunken Calf leather by Perlinger, a legendary German tannery established in 1864. Using a chrome tanning and shrinking process—not heat—the leather retains its rich grain and texture. Finished with aniline dyes and Perlinger’s proprietary pigments, the case offers exceptional durability, vibrant color, and timeless style to match the SP4000’s sophistication. Specifications Astell&Kern SP4000 Storage: 256GB internal microSD card support up to 1.5TB, ideal for storing your Astell&Kern A&ultima SP4000 music collection. Wi-Fi: Dual-band 2.4/5GHz (802.11 a/b/g/n/ac) Connectivity: USB-C, USB DAC functionality, DLNA, USB Audio Out Screen: 6.0” 2160×1080 Full HD touchscreen Playback Support: PCM up to 32-bit/768kHz & native DSD512 ReplayGain: Auto volume adjustment across tracks Wireless File Transfer: With AK File Drop over your network Bluetooth: Supports aptX™ Adaptive and LDAC™ BT Sink Mode: Use the SP4000 as a Bluetooth DAC for external sources Battery Life: Approx. 10 hours of continuous playback with Astell&Kern A&ultima SP4000 Charging: Qualcomm QC 3.0 Fast Charging (full charge in ~4 hours) Crossfeed Feature: Customize stereo imaging for headphone listening with Astell&Kern A&ultima SP4000 Roon Ready: Pending final certification from Roon Labs for the Astell&Kern A&ultima SP4000 The A&ultima SP4000 is more than a digital audio player—it’s a master-crafted listening instrument, combining leading-edge innovation with luxurious design and audiophile-grade performance. Whether you’re streaming, collecting, or critical listening, the SP4000 sets the new reference in portable high-end sound.