Astell&Kern
Leitor de áudio de alta resolução Astell & Kern KANN ULTRA (caixa aberta)
Best portable player for audiophiles demanding desktop-level power for high-end headphones.
Experience unparalleled portable audio with the Astell & Kern KANN ULTRA Hi-Res Player. This device delivers desktop-level power, boasting up to 16 Vrms output via its Dual ES9039MPRO DACs, perfect for demanding headphones. Its innovative triple output system, managed by TERATON ALPHA technology, ensures optimal sound quality for any connection. Featuring a sleek design, a fast Octa-Core processor, and the intuitive Crimson interface, the KANN ULTRA offers a refined and powerful music listening experience for the discerning audiophile.
$1583.00
Owner Satisfaction
4.7
/ 5
Category Rank
7
/ 144
#7 in MP3 Players
Price vs Category Average
+33%
Above average
DACs
9039
/ ESMPRO Dual DAC
Who it's for
- Audiophiles driving demanding high-impedance or planar headphones
- Listeners seeking reference-grade, high-resolution audio precision
- Budget-conscious enthusiasts wanting flagship performance for less
Who should skip it
- Commuters needing a lightweight, pocketable music player
- Travelers requiring long-lasting battery life for extended trips
- Buyers prioritizing full manufacturer warranty and pristine condition
Performance breakdown
Driving Power
Desktop-level output effortlessly handles even the most demanding high-impedance audiophile headphones.
Audio Fidelity
Dual ES9039MPRO DACs deliver exceptional clarity and precise, noise-free sound reproduction.
Interface Responsiveness
The Octa-Core processor ensures fluid navigation through complex high-resolution music libraries.
Portability
Substantial weight and size prioritize raw performance over pocket-friendly convenience.
Connectivity Versatility
Triple output modes provide flexible, optimized connections for various headphone configurations.
Battery Endurance
Solid longevity for high-resolution playback, though power-hungry settings will drain it.
Key Specs
DACs
ES9039MPRO Dual DAC
Maximum Output
16 Vrms (Balanced)
Gain Settings
4 presets
Supported Formats
Up to 32-bit/768 kHz, native DSD512
Processor
Latest Generation Octa-Core
Battery
8,400mAh
Dimensions
82 mm x 140 mm x 24 mm
Weight
390g
Features
- Ultra-high output up to 16 Vrms
- Triple output modes with separate circuits
- Dual next-gen ES9039MPRO DACs
- TERATON ALPHA technology for pure audio
- Octa-Core processors for fast performance
- Crimson interface focused on music navigation
- Native DSD512 and 32-bit/768 kHz support
- Dedicated shielding for noise reduction
What customers say
Enthusiasts view the Astell & Kern KANN ULTRA, even as an open box item, as a definitive endgame portable audio device. Customer satisfaction centers on its unparalleled sonic performance and massive amplification power. Reviewers consistently note its ability to effortlessly drive demanding planar and high impedance headphones while maintaining exceptional clarity and detail. The sound signature is praised for being dynamic, highly resolving, and offering excellent soundstage separation. Build quality is universally lauded as robust and premium. The open box status significantly enhances its value proposition, offering access to this top tier gear at a reduced cost. Minor drawbacks include its considerable size and average battery life at maximum gain settings. Overall, the KANN ULTRA delivers fully on its promises of fidelity and power.
Know before you buy
The KANN ULTRA is designed to provide desktop-level power, featuring an ultra-high output of up to 16 Vrms. This allows it to drive even the most demanding high-impedance headphones that typical portable players struggle to power.
The device utilizes separate circuits for its output modes, managed by Astell&Kern's TERATON ALPHA technology. This ensures that the signal path is optimized for the specific connection you are using, maintaining audio purity and reducing interference.
Yes, the KANN ULTRA supports native DSD512 and PCM files up to 32-bit/768 kHz. It is built to handle virtually any high-resolution format you might have in your digital library.
The player features the Crimson interface, which is specifically designed for intuitive music navigation. Combined with the Octa-Core processor, the system remains fast and responsive while browsing large collections.
You can expect up to 11 hours of continuous playback on a single charge. Given the high-power output capabilities of the device, this is a solid duration for a player of this caliber.
No, open-box units are fully tested to ensure they meet the same performance specifications as new devices. You receive the same high-fidelity audio experience, including the full functionality of the Dual ES9039MPRO DACs.
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