Astell&Kern AK HC4: Unleashing Hi-Fi Sound on Your Smartphone

Step into a world of uncompromised audio with the Astell&Kern AK HC4, a groundbreaking USB DAC that unlocks the true potential of your smartphone. This meticulously crafted device, available exclusively at Addicted To Audio and select dealers, bridges the gap between mobile convenience and high-fidelity sound, bringing the renowned Astell&Kern sonic signature to your fingertips.

The AK HC4 boasts the prestigious AKM AK4493s DAC, a component celebrated for its ability to extract every nuance and detail from your music. Coupled with a dedicated AMP circuit designed specifically for mobile use, this exceptional combination delivers crystal-clear audio that surpasses the limitations of your smartphone’s built-in DAC.

The AK HC4 provides unparalleled connection options with both 3.5mm and 4.4mm outputs. This allows you to seamlessly connect a wide range of headphones and IEMs, ensuring compatibility and a comfortable listening experience tailored to your preferences. Whether you favor the versatility of 3.5mm or the superior audio performance of 4.4mm balanced output, the AK HC4 empowers you to experience your music exactly as intended.

The AK HC4 goes beyond simply playing music. Featuring Astell&Kern’s proprietary Digital Audio Remaster (DAR) technology, the HC4 can upsample your music to even higher sample rates, revealing hidden details and enriching the overall soundscape. Each note takes on a new depth, instruments become more distinct, and the overall listening experience becomes captivatingly lifelike.

The AK HC4 isn’t just limited to your smartphone. Its versatile design ensures seamless compatibility with your PC, tablet, and even gaming devices like PlayStation and Switch. Whether you’re enjoying your favourite tracks at home, gaming with immersive audio, or immersing yourself in a movie on your tablet, the AK HC4 consistently delivers exceptional audio quality across all platforms.

The AK HC4 prioritizes clarity and purity in every aspect of its design. The rear audio output structure minimises noise interference, while the dual shielded cable further isolates the audio signal from external disturbances.

The AK HC4 doesn’t compromise usability for performance. Its interchangeable cable effortlessly supports both Type-C and Lightning connections, ensuring smooth functionality with Android and iOS devices. Additionally, the sleek and compact design fits comfortably in your hand, while the intuitive controls allow for effortless operation.

The AK HC4’s unibody structure exudes timeless elegance, while the durable materials ensure lasting enjoyment. The intuitively positioned controls further enhance the user experience, making music control a seamless and intuitive process.


  • Model: AK HC4
  • Body Color: Moon Silver
  • Body Material: Aluminum
  • DAC: AKM AK4493S
  • Sample rate: PCM: 8kHz ‾ 384kHz (8/16/24/32bits per Sample) DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
  • Output Level: Unbalanced 2Vrms / Balanced 3Vrms (Condition No Load)
  • Input: USB Type-C (supports UAC 1.0 and UAC 2.0)
  • Output: 3.5mm (Unbalanced), 4.4mm (Balanced, Only 5-pole supported)
  • Dimensions: 29.5mm[W] x 64.5mm[H] x 14.5mm[D]
  • Weight: About 1.09oz (31g)


  • Frequency Response: ±±0.062dB (Condition: 20Hz‾20kHz) Unbalanced │ ±0.063dB (Condition: 20Hz‾20kHz) Balanced ±0.066dB (Condition: 20Hz‾70kHz) Unbalanced │ ±0.067dB (Condition: 20Hz‾70kHz) Balanced
  • Signal to Noise Ratio: 118dB @ 1kHz, Unbalanced │ 118dB @ 1kHz, Balanced
  • Crosstalk: -134dB @ 1kHz, Unbalanced │ -136dB @ 1kHz, Balanced
  • THD+N: 0.0005% @ 1kHz, Unbalanced │ 0.0009% @ 1kHz, Balanced
  • IMD SMPTE: 0.0005% 800Hz 10kHz (4:1) Unbalanced │ 0.0004% 800Hz 10kHz (4:1) Balanced
  • Output Impedance: Unbalanced Out 3.5mm (0.9ohm) │ Balanced Out 4.4mm(1.6ohm)

The new Astell&Kern AK HC4 will be available from Addicted To Audio and selected dealers for AUD$399.95, instore and online.

About Michael Aulia

Owner of, Michael is a tech enthusiast who blends a love for gadgets with a passion for gaming. With insightful articles and professional reviews, he navigates the digital landscape, offering expertise on consumer electronics and gaming trends.

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