Astell&Kern SP4000 – The Ultimate Portable Hi-Fi Audio Player

Price: £3,799.00
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Elevate Your Listening with the Most Advanced Digital Audio Player Ever Created

The Astell&Kern SP4000 redefines what’s possible in portable high-resolution audio. Crafted from luxury-grade 904L stainless steel and packed with groundbreaking Octa-DAC architecture, this flagship digital audio player (DAP) delivers studio-quality sound with unmatched precision, power, and depth. If you’re seeking audiophile perfection in a portable form, the SP4000 is your endgame.

Key Features at a Glance

• True Octa DAC Design – Quad AK4499EX DACs + Dual AK4191 modulators for unparalleled channel separation and noise control
• High Driving Mode – Powers full-size headphones with stunning clarity and depth
• Full Android OS + Play Store – Download and stream directly from TIDAL, Qobuz, Apple Music and more
• Bit-Perfect Streaming – Astell&Kern’s proprietary ADP technology bypasses Android SRC for pure playback
• Snapdragon 6125 + 8GB RAM – Seamless performance for multitasking, streaming, and library management
• 256GB Internal Storage + microSD Slot – Expandable up to 1.5TB
• LDAC, aptX-HD & Bluetooth Sink Mode – Wireless high-res audio
• 6″ Full HD+ Display – Crystal-clear 2K screen with LP-style UI
• 10-Hour Battery Life – Qualcomm Quick Charge 3.0 & USB-C PD support
• Premium Leather Case Included – Perlinger German leather, form-fitted and protective

Unmatched Sound Performance

Experience sound as the artist intended—raw, uncompressed, and alive. The SP4000’s Octa DAC circuit delivers:

• 131 dB SNR
• 0.0002% THD+N
• Ultra‑low noise floor
• Massive dynamic headroom

With Enhanced Signal Alignment (ESA) and Digital Audio Remaster (DAR) processing, every frequency is rendered with incredible timing, realism, and space.

Engineered for Streaming Perfection

The SP4000 is the first Astell&Kern DAP to feature full Android with:

• Play Store access for all your favorite apps
• Bit-perfect audio routing via ADP (Astell&Kern Direct Path)
• Stream in native sample rate from TIDAL, Apple Music, Qobuz, or local NAS servers
• Pair with any Bluetooth headphone or DAC thanks to LDAC, aptX Adaptive, and BT Sink mode

Built Like No Other

• 904L Stainless Steel Chassis – Used in Swiss luxury watches for superior corrosion resistance and shine
• Precision-Milled Volume Dial with LED ring – Glows according to bit-depth
• Leather Case Included – Shrunken calfskin from Perlinger (Germany), custom-fit for tactile protection
• Solid weight (~615g) – Built for serious listening, not pocket play

Connectivity & Compatibility

• Dual-band Wi‑Fi (2.4GHz/5GHz)
• Bluetooth 5.0 (LDAC, aptX HD, aptX Adaptive)
• USB‑C with USB DAC support
• Output: 3.5mm unbalanced, 4.4mm + 2.5mm balanced
• Supports all major audio formats: FLAC, WAV, ALAC, DSD512, MQA, AAC, MP3 and more

Technical Specifications

Why Choose the SP4000?

• Perfect for critical listening with high-end headphones and IEMs
• Ideal for audiophiles and sound engineers who demand reference-grade playback
• Combines streaming freedom with studio-level quality in a single package
• Future-proof with firmware updates and Android flexibility

What’s in the Box?

• Astell&Kern A&ultima SP4000 Player
• Premium Perlinger Leather Case
• USB‑C Charging & Data Cable
• Quick Start Guide
• Warranty Card (2 Years Manufacturer Coverage)