Astell & Kern Ultima SP4000 Digital Audio Player Overview The Astell & Kern Ultima SP4000 Digital Audio Player is Astell&Kern’s flagship digital audio player, born from three years of innovation following the SP3000. It delivers unmatched clarity and refined audio performance, redefining portable listening. Design The SP4000 features a sleek, ergonomic design with a 4.5th generation UI that balances functionality and emotional appeal. Its pure copper shielding ensures precision and minimises interference, combining form and performance. Performance Powered by an advanced Octa audio circuit, the SP4000 supports High Driving Mode and proprietary ESA technology, reducing group delay. Ultra Low Noise LDO regulators enhance signal integrity for pristine sound reproduction. Technology The SP4000 is the first Astell&Kern player to support full Android OS and Advanced DAR technology. Any Layer Type PCB guarantees precision, while AK4191EQ and AK4499EX DACs deliver high-resolution audio across formats. Experience SP4000 users can enjoy an audio experience that approaches perfection. Every detail is articulated with clarity, depth, and power, offering an immersive journey through music with every track. ModelSP 4000 DACAK4191EQ x4 / AK4499EX x4 Audio CircuitOcta-Core Architecture Operating SystemFull Android OS Driving ModeHigh Driving Mode ESA TechnologyEnhanced Signal Alignment PCB TypeAny Layer Type Shielding99.9% Pure Copper Can UI4.5th Generation Noise SuppressionUltra Low Noise LDO Regulator WeightApprox. 400g Battery LifeUp to 12 hours
