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Astell & Kern KANN MAX
Engineered to Powerful Perfection
The KANN series is a portable player lineup loved by audiophiles all over the world for its performance focused on high output and clear sound.
KANN MAX, the fourth product in the KANN series, builds on the advantages of the KANN series with higher output and portability.
It provides 4 levels of gain and up to 15Vrms output so that a wide array of headphones can be driven in an optimal state.
By integrating the proven design of the KANN series into a lighter weight and smaller sized player, we have realized both ultra-high output and low noise. KANN MAX features ESS ES9038Q2M Quad-DAC together with Astell&Kern's unique audio technology to provide the best performance you can feel from a portable DAP.
- 4-step gain level with maximum 15Vrms output
- Perfect circuit design with ultra-high output and low noise in an even smaller sized player
- Equipped with ESS ES9038Q2M Quad-DAC that reproduces clear, exceptional output
- TERATON ALPHA, the epitome of Astell&Kern audio technology
- 32-bit/768kHz, Native DSD512 support
- Bluetooth 5.0 and 24-bit codec (Qualcomm® aptX™ HD , LDAC) support
- ReplayGain that automatically adjusts volume to be consistent across tracks
Perfect Circuit Design That Achieves Both Ultra-High Output and Low Noise
As the output increases, so does the noise level.
KANN MAX is equipped with ultra-high output, does not allow any noise and conveys Astell&Kern's philosophy of delivering the original sound as it should be, without compromise. Together, we have completed the perfect circuit design to achieve this.
KANN MAX applies an analog volume controller to deliver a rich dynamic range without loss.
By separately configuring the power supply IC for each Audio Block divided into DAC, Volume, and AMP, KANN MAX is designed to stably supply the power required for each Audio IC. Through this design, the interference ripple noise of the DC-DC power supply (the shaking noise phenomenon that occurs when power is supplied) is removed. Audio noise that can be heard amplified like audio sound in OP AMP is minimized.
Ultra-high output and low noise in the KANN MAX was achieved through different circuit design, including creating and dividing a limited PCB that is the same size as KANN ALPHA into 12 layers and reviewing the physical size of the device applied to the AMP circuit.
Quad-DAC Sound That Reproduces Clear and Overwhelming Sound Output
KANN MAX is the first player in the KANN series to be equipped with four ES9038Q2M DACs for high-output performance.
By applying Quad DACs, one DAC can be fully allocated to one channel, so the depth and realism of the sound source can be expressed to the fullest.
Combined with Astell&Kern's amplifier circuit technology that naturally and delicately raises the strengths of the DAC, and the perfect decoding ability of the DAC to deliver the original sound as it is, music output is expressed as the original sound without distortion.
Four DACs applied to KANN MAX, a power supply IC configured for each audio block, and a perfect circuit design produce ultra-high output and low noise, providing you with the best performance and sound that the KANN series is known for.
Gold PVD Output Coating
In order to minimize contact noise from the output jacks, a gold PVD coating method is applied to the headphone connector instead of the typical rings used by other products. This improves both design and function.
32-bit/768kHz, Native DSD512 Support
Bit-to-bit playback is available up to 32-bit/768Hz, and DSD playback is native up to 22.4MHz, for uncompressed sound quality, staying true to the artist’s original intention, in high-resolution and with minimal distortion.
Astell&Kern Audio Technology Forms the TERATON ALPHA Sound Solution
AK ULTIMATE SOUND SOLUTION, TERATON ALPHA
TERATON ALPHA is AK's Ultimate Sound Solution to produce audio playback that is close to the original sound through the audio output interface by use of effective power noise removal, efficient power management and amplification with minimal distortion.
TERATON ALPHA features Astell&Kern's patented technologies, which are the result of tens of thousands of hours of continuous research and development to produce sound close to the original sound the artist and producer intended.
Equipped with Bluetooth 5.0 and Support for Wireless 24-bit aptX™-HD, LDAC Codecs
Bluetooth 5.0 features faster transmission speed and greater range compared to Bluetooth 4.2, therefore providing a more stable wireless connection.
Both LDAC and aptX™ HD is supported to provide audiophiles with high-quality sound even when listening wirelessly.
Wireless Hi-Fi Sound Through BT Sink
The BT Sink function connects the KANN MAX to an external device via Bluetooth, similar to connecting a smartphone with a BT speaker. Music from an external device, such as a smartphone can now be played back in high-quality on the KANN MAX using the BT Sink function.
ReplayGain Automatically and Uniformly Adjusts Playback Volume
ReplayGain, which adjusts sound sources with different volumes to an identical level, has been applied. Now, enjoy your own playlists seamlessly through the ReplayGain feature on KANN MAX.
* ReplayGain supports up to 24bit/192 kHz sound sources.
AK File Drop to enjoy wireless transfers
The new AK File Drop function in the KANN MAX makes files transfers easier and more convenient.
Using AK File Drop, you can freely transfer files wirelessly through a PC, smartphone, or FTP program located on the same network.
Music file management is now possible with a cableless, wireless solution.
Real-Time Information Confirmed by Light
KANN MAX features a LED volume wheel which displays various playback information, including volume level and bit-rate of the track currently playing.
* LED can be turned on or off according to user setting.
DESIGN
KANN MAX has been visualized as Maximum while inheriting the bold concept of the KANN series to capture the overflowing horsepower of a high-performance sports car and the intense power of a rocket engine.
While the existing KANN series image was a heavy and strong image like an off-road car, with KANN MAX, we wanted to continue the identity of the Astell&Kern KANN lineup while boasting a thinner size and high-power performance like a high-performance sports car.
The slimmer shape is emphasized with the hexagonal top line that narrows sharply from the bottom up, and the hairline treatment on the back expresses the sense of speed and shows confidence that it can produce powerful output.
The wheel protectors wrapped around the volume wheel radiate sparks in the shape of a powerful engine mounted on them, giving off a strong image that looks like it will pop out at any moment.
The KANN MAX is made of an aluminum body, and is available in an Anthracite Gray color model that inherits the signature color of Astell&Kern, and a limited edition of the Brown Mud color.
The KANN MAX Brown Mud model is produced in limited quantities, and the identity of the KANN series with its bold and heavy concept is enhanced using this bold color and look. Experience the identity of the KANN series with the delicate and sophisticated design of the Anthracite Gray color model, and the Brown Mud color model with strength and luxury.
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Professional Reviews 88/100
Nicely Roasted
Sound Quality
91/100
Build Quality
90/100
Features Usability
82/100
Value for Money
84/100
The neutral, highly resolving KANN MAX delivers crisp detail, wide imaging, and real muscle for demanding headphones. L. Miller praised its solid build, deep bass texture, and powerful gain options, while Audiophilepure highlighted its airy stage, layering, and musical precision. It is a serious DAP for listeners who want reference-grade performance in a rugged portable form.
What Reviewers Are Saying
Pros
Highly resolving sound with crisp detail, strong instrument separation, and a spacious, airy presentation.
Powerful output and flexible gain settings let it drive a wide range of headphones and IEMs with ease.
Solid, confidence-inspiring build quality with a substantial feel in hand.
&
Cons
The UI is functional but slower and less polished than competing players, with some awkward streaming navigation.
Some sensitive IEMs can sound strident or etched at higher gain settings.
TIDAL syncing can be sluggish, adding a small delay to streaming playback.
SOUND QUALITY PERFORMANCE 91/100
Reviewers consistently describe the KANN MAX as precise yet musical, with a neutral tuning that still has body and energy. They also praise its strong resolution, clear separation, and spacious, airy presentation, though one review notes the top end can become strident and etched with some sensitive headphones at higher gain.
Tonal Balance Musicality
89/100
The sound is repeatedly described as neutral but not sterile, with a normal amount of body and a musical, engaging presentation. One reviewer says the top end can turn strident and etched with certain IEMs at higher gain, which keeps it from feeling completely effortless across all pairings.
Resolution Detail
94/100
This is a major strength in the reviews, with repeated praise for crispness, transparency, and the ability to reveal fine musical information. Reviewers call out excellent detail retrieval, strong instrument separation, and layered presentation, with one comparing its resolving ability to far more expensive playback setups.
Digital Performance
90/100
Reviewers describe the KANN MAX as very clean, transparent, and technically accomplished, with clarity and distortion staying nearly the same across gain settings. There is also a mention of the noise floor becoming a real issue in one context, but the overall digital execution is still portrayed as highly capable and precise.
FEATURES USABILITY PERFORMANCE 82/100
The KANN MAX is praised for its broad functionality, strong headphone-driving ability, and useful gain settings, along with Bluetooth options such as LDAC and aptX HD. Usability is less consistent, though: one review mentions quirks in the UI, and TIDAL syncing can be sluggish, with the newer SP3000 interface held up as something the KANN MAX lacks.
Streaming Software
78/100
Reviewers like the available streaming possibilities, but they also point to UI quirks and slower cloud/TIDAL syncing. The software experience sounds functional and capable rather than especially smooth or polished.
Features Connectivity
90/100
Connectivity is a strong point, with balanced outputs, optical out, Bluetooth with LDAC and aptX HD, OTA firmware updates, and the ability to drive demanding headphones. Reviewers also highlight the flexible gain options and the usefulness of the device as a source for both headphones and compatible wireless gear.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
90/100
Reviewers say the KANN MAX feels solid in hand, has substantial heft, and inspires confidence in its durability. The fit and finish are described positively, and it is presented as a well-built unit that feels reliable rather than merely flashy.
Value for Money
84/100
At around $1,300, reviewers treat it as a serious purchase, but they also describe performance that competes with much pricier digital players and even call it one of the top DAPs available. There is respect for what it does at the price, though the reviews stop short of calling it an outright bargain.
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