The Astell&Kern A&ultima SP4000 redefines what’s possible in portable music players. Known for its unmatched sound quality and premium craftsmanship, this flagship model sets new standards in high-resolution audio playback. It’s designed for true audiophiles who crave studio-quality sound in the palm of their hand.
Design and Build Quality
The SP4000 features a stunning stainless-steel body with diamond-cut edges, offering a luxurious look and feel. Its 5.5-inch full HD display provides smooth navigation and exceptional clarity. Astell&Kern’s signature volume wheel with an LED ring adds elegance and visual feedback, enhancing the overall user experience.
Sound Performance
At the heart of the Astell&Kern A&ultima SP4000 lies the latest dual AKM AK4499EX DAC architecture, combined with a separate digital and analog processing system for pure, distortion-free audio. It supports PCM playback up to 768kHz/32-bit and native DSD512, ensuring lifelike sound reproduction. The SP4000’s dynamic range, powerful bass, and crystal-clear highs make it perfect for critical listening.
Connectivity and Features
The SP4000 supports Wi-Fi, Bluetooth 5.3 with LDAC, and aptX HD for seamless wireless streaming. Its USB-C port allows fast data transfer and charging, while the dual-band Wi-Fi ensures smooth firmware updates. You can also use it as a USB DAC for your computer, transforming your digital music experience.
Battery and Storage
Astell&Kern equipped the SP4000 with a 5,000mAh battery, delivering up to 12 hours of continuous playback. It comes with 256GB of internal storage, expandable via microSD up to 1TB, offering ample space for lossless audio files.
User Interface and Experience
Running on Astell&Kern’s refined Android-based OS, the interface is smooth and intuitive. It supports streaming apps like TIDAL, Qobuz, and Spotify through Open APP Service, ensuring flexibility between offline and online music playback.
Final Verdict
The Astell&Kern A&ultima SP4000 isn’t just a music player—it’s a statement piece for serious audiophiles. With cutting-edge DAC technology, exquisite design, and premium performance, it delivers sound quality that rivals high-end desktop systems in a portable form.
FAQs
Q1: What is the primary feature of the Astell&Kern A&ultima SP4000?
The SP4000 features dual AKM AK4499EX DACs that deliver exceptional clarity and lifelike sound reproduction.
Q2: How much storage does the Astell&Kern A&ultima SP4000 offer?
It comes with 256GB of internal storage, expandable via microSD up to 1TB.
Q3: Does the SP4000 support streaming apps?
Yes, it supports major music streaming apps like TIDAL, Qobuz, and Spotify through Astell&Kern’s Open APP Service.
Q4: What is the battery life of the SP4000?
The device offers up to 12 hours of continuous playback on a single charge.
Q5: Is the Astell&Kern A&ultima SP4000 worth buying?
Absolutely. For audiophiles seeking unmatched sound quality, advanced DAC architecture, and premium craftsmanship, the SP4000 is one of the best high-end music players available.
