Astell&Kern
Astell & Kern KANN ULTRA
Best high-output portable player for demanding audiophiles seeking pristine sound quality.
The Astell & Kern KANN ULTRA is the fifth generation of the acclaimed KANN series, designed for audiophiles seeking ultra-high output and pristine sound quality. It boasts the highest output of any Astell&Kern player, delivering up to 16Vrms across four gain modes, powered by dual ES9039MPRO DACs. Featuring a Triple Output Mode with separate amplifier designs for Headphone Out, Pre-Out, and Line Out, it ensures optimal sound for any setup. The device is equipped with next-generation Octa-Core processors for a smooth, fast user experience and a new Crimson UI/UX for intuitive music navigation. With a 5.5-inch screen and a weight of 390g, it offers enhanced portability and grip.
$1759.00
More KANN Options
Owner Satisfaction
4.6
/ 5
Category Rank
16
/ 144
#16 in MP3 Players
Price vs Category Average
+48%
Above average
Output Level (Super)
816
/ Unbalanced Vrms, Balanced Vrms
Who it's for
- Audiophiles seeking studio-grade clarity and immersive soundscapes
- Listeners using high-impedance headphones requiring serious amplification
- Design-conscious users who appreciate premium, durable craftsmanship
Who should skip it
- Budget-conscious buyers prioritizing value over high-end performance
- Commuters needing a lightweight device for easy pocket portability
- Streaming enthusiasts who rely on a wide variety of apps
Performance breakdown
Drive Capability
The 16Vrms output effortlessly powers even the most demanding audiophile headphones.
Sonic Fidelity
Dual ES9039MPRO DACs deliver an expansive, highly detailed, and transparent soundstage.
Interface Responsiveness
Octa-core processing ensures fluid navigation through complex high-resolution music libraries.
Output Versatility
Dedicated amplifier designs for headphone, pre-out, and line-out maximize system flexibility.
Portability
Substantial weight and dimensions prioritize raw performance over pocket-friendly convenience.
Noise Management
TERATON ALPHA technology effectively eliminates power noise for a pristine background.
Key Specs
Output Level (Super)
Unbalanced 8Vrms, Balanced 16Vrms
Output Level (HIGH)
Unbalanced 6Vrms, Balanced 12Vrms
Output Level (Mid)
Unbalanced 4Vrms, Balanced 8Vrms
Output Level (Low)
Unbalanced 2Vrms, Balanced 4Vrms
Dimensions
82mm x 140mm x 24mm
Weight
390g
DAC
ES9039MPRO Dual DACs
Battery
8,400mAh
Features
- Highest output of any Astell&Kern player, up to 16Vrms
- Triple Output Mode (Headphone Out, Pre-Out, Line Out) with separate amplifier designs
- Next-generation Octa-Core processors for enhanced speed and performance
- Dual ES9039MPRO DACs for richer, more expansive sound
- TERATON ALPHA technology for effective power noise removal and efficient power management
- Crimson UI/UX designed for an immersive music-only experience
- Supports playback up to 32-bit/768kHz and Native DSD512
- Choice of seven DAC filters to customize sound style
What customers say
Customers consistently praise the Astell & Kern KANN ULTRA for its exceptional sound quality, delivering a powerful and detailed audio experience that truly elevates listening. Many highlight its robust and premium design, appreciating the solid build and sophisticated aesthetic. While a significant investment, enthusiasts often find its performance and craftsmanship justify the cost, making it a highly regarded choice for serious portable audio. The device is celebrated for driving even demanding headphones with ease, cementing its reputation for high fidelity.
Know before you buy
The KANN ULTRA is built specifically for power, offering the highest output in the Astell&Kern lineup at 16Vrms. It features a dedicated Triple Output Mode that uses separate amplifier circuits for Headphone, Pre-Out, and Line Out connections to ensure the best signal quality for your specific audio setup.
Yes, the KANN ULTRA is designed to drive demanding headphones with ease. With four distinct gain modes—reaching up to 16Vrms in Super mode—it provides more than enough power to handle high-impedance gear that typically requires a desktop amplifier.
The device features physically separate amplifier designs for its three output types. This means when you switch between Headphone, Pre-Out, and Line Out, the player optimizes the signal path and voltage specifically for that connection, reducing interference and maintaining audio integrity.
The KANN ULTRA uses the new Crimson UI/UX, which is designed to be intuitive and focused on music navigation. The combination of the new interface and the upgraded Octa-Core processor makes the user experience fast, fluid, and straightforward.
Yes, you can tailor the audio profile to your preference using seven different DAC filters. These filters allow you to subtly adjust the sound signature provided by the dual ES9039MPRO DACs to better match your headphones or listening style.
While it is more substantial than a standard smartphone, weighing 390g, it is designed for portability within the audiophile category. It balances a large 8,400mAh battery and powerful internals with a 5.5-inch screen, making it a manageable, high-performance device for serious listening on the go.
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$1759