Astell&Kern AK HC5 AK4191EQ + AK4499EX Hi-Res 3.5mm /4.4mm Portable USB DAC AMP

The AK HC5 is Astell&Kern's first high-end portable USB DAC, designed to bring their legendary DAP-level audio philosophy
into a compact form. Featuring the world's first integration of the AKM AK4499EX flagship DAC in a portable USB DAC,
it delivers overwhelming sound performance with incredible detail and power.

The First USB DAC Cable with AK4499EX
For the first time in a USB DAC cable, the AK4499EX DAC— previously only used in flagship DAPs—delivers top-tier sound performance.
The combination of the AK4191EQ digital processor and AK4499EX DAC perfectly separates and processes digital and analog signals, minimizing noise interference and reproducing even the finest details with precision. Experience premium, digital-audio-player–level sound quality through a USB DAC ca

Compact Body, Ultimate Performance
The High Driving Mode technology perfected in the SP4000 now powers the AK HC5, achieving exceptional sound performance in a remarkably compact form. A horizontal OPAMP layout delivers driving power on a completely different level from typical portable USB DACs. Rich density, deep spaciousness, and powerful energy — experience flagship-grade sound from a compact size.

Noise Suppression Design for Pure, Clean Sound
Due to the nature of USB DAC cables that receive power from external devices, minimizing sound degradation caused by incoming noise is essential.
The AK HC5 features a dedicated amplifier with excellent PSRR (Power Supply Rejection Ratio) / CMRR (Common Mode Rejection Ratio) noise-suppression performance, delivering pure and clean sound no matter what device it is connected to.

Wide Compatibility, UAC 2.0 & 1.0 Dual Support
Supporting both UAC 2.0 and 1.0, the AK HC5 ensures perfect compatibility with a wide range of devices.
With UAC 1.0 mode, it can be directly connected to gaming consoles such as PlayStation and Nintendo Switch, delivering dynamic, immersive sound for gaming. From music listening to gaming, the AK HC5 provides high-resolution sound in any situation.
Notes for Product Use Compatibility Compatible with most Android and iOS smartphones and tablets, as well as Windows 10 / 11 and macOS systems.
Actual compatibility may differ due to the hardware, software and system restrictions of the connected device. Driver Installation (Windows) When connecting to a Windows PC, the driver will be installed automatically. For high-resolution audio playback,
please install the exclusive USB DAC driver, which is available for download in the **Support → Download** section on our official website. Earphone / Headphone Standard This device supports CTIA standard 4-pole earphones and headphones. OMTP standard devices are not supported. High-Resolution Playback (Smartphones) To play DSD and high-resolution PCM audio on smartphones, you need to install a dedicated third-party
playback application (free or paid). The system default player will downsample the audio source;
please use a professional playback app to enjoy lossless high-quality sound. Hearing Protection Warning Please confirm the volume level before connecting earphones or headphones. Depending on the connected device,
the output volume may automatically default to the maximum level upon first connection.
Please adjust the volume to a safe level before listening. When connected to an Astell&Kern player, the output volume will be locked at maximum and cannot be adjusted via the player.
Long-term listening at maximum volume may cause permanent hearing damage.
The manufacturer shall not be held liable for any hearing impairment or loss caused by improper operation or careless use. Firmware Update Firmware updates may be released periodically to optimize performance and enhance system stability.
For update files and instructions, please visit the **Support → Download** page on our official website.
General Specifications Model: AK HC5 Body Color: Satin Silver Body Material: Aluminum DAC: AKM AK4191EQ + AK4499EX Sample Rate: PCM: 8kHz ~ 768kHz (8/16/24/32bits per Sample) Native DSD: DSD64 (1bit 2.8MHz) Stereo, DSD128 (1bit 5.6MHz) Stereo,
DSD256 (1bit 11.2MHz) Stereo, DSD512 (1bit 22.4MHz) Stereo Output Level: Unbalanced 2.5Vrms / Balanced 5Vrms (No Load Condition) Input: USB Type-C (Supports UAC 2.0 and UAC 1.0) Output: 3.5mm (Unbalanced), 4.4mm (Balanced, Only 5-pole supported) Dimensions: 32mm[W] x 64.3mm[H] x 16mm[D] Weight: About 1.62oz (46g)

Audio Performance

Frequency Response±0.006dB (20Hz~20kHz) Unbalanced / Balanced±0.06dB (20Hz~70kHz) Unbalanced / Balanced
Signal to Noise Ratio121dB @ 1kHz, Unbalanced125dB @ 1kHz, Balanced
Crosstalk-139dB @ 1kHz, Unbalanced-141dB @ 1kHz, Balanced
THD+N0.0005% @ 1kHz, Unbalanced0.0004% @ 1kHz, Balanced
IMD SMPTE0.0006% 800Hz 10kHz (4:1) Unbalanced0.0005% 800Hz 10kHz (4:1) Balanced
Output ImpedanceUnbalanced 3.5mm Output: 0.5ΩBalanced 2.5mm / 4.4mm Output: 1.1Ω

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Shipping Terms
 
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Return Terms
 
1. If you receive defective item, please kindly notify us within 14 days. We will guide you the returning instruction for replacement or refund.
2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA.
3. We reserve the right to refuse any returns for objective reasons.
Custom Duties & Taxes
 
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2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.
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