Astell&Kern – HC4 USB-DAC

Discover the AK HB1, a portable Bluetooth DAC/AMP that effortlessly brings you top-tier audio and Hi-Fi streaming services without the constraints of cables.

Immerse Yourself in Musical Freedom

Connect your mobile device to the AK HB1 via Bluetooth, unlocking a world of seamless, wireless Hi-Fi sound across a variety of IEMs and headphones. This is made possible by its compact, lightweight design and a robust built-in amplifier. Moreover, the AK HB1 provides Astell&Kern’s signature sound quality through USB DAC functionality, seamlessly linking with gaming devices and offering an immersive multimedia experience with microphones. Transform your mobile device into a hub of limitless audio possibilities and entertainment.

Main Features

• 3.5-mm and 4.4-mm Dual Output
• Supports LDAC and aptX™HD for High-quality Bluetooth Sound
• Features ESS ES9281AC PRO DAC
• Separate DAC and AMP for Premium Hi-Fi Experience
• Plug & Play USB DAC Function
• Interchangeable Cable (Type-C and Lightning Cable Included)
• Supports UAC 1.0 (Gaming System)
• Clear and Vivid Voice in Calls
• Car Mode Supported
• Multi-point Connection (Up To Two Devices)
• MQA Renderer

Exceptional Bluetooth for Hi-Fi Excellence

The AK HB1 is furnished with Qualcomm’s CSR8675 Bluetooth chipset, dedicated to delivering premium audio quality and ensuring a steadfast connection. Supporting the transmission of high-resolution audio sources, this Bluetooth chipset guarantees a stable link.

From LDAC, supporting 24 bit/96 kHz, to the aptX™ HD codec offering robust 24 bit/48 kHz support, the AK HB1 accommodates a broad spectrum of codecs, including the commonly used AAC and SBC. This extensive codec support ensures seamless wireless playback of high-resolution streaming audio from both smartphones and PCs.

Additionally, the AK HB1 boasts Bluetooth multi-point capability, enabling simultaneous connections with up to two devices. This functionality allows for easy switching between various mobile devices, facilitating scenarios such as enjoying music from a tablet PC while concurrently receiving notifications and calls on your smartphone. The AK HB1 offers a versatile and premium Bluetooth experience for audiophiles seeking Hi-Fi sound.

Elevate Your Listening Experience with Hi-Resolution Sound

The AK HB1 transcends conventional Bluetooth playback, offering an exceptional, full high-resolution sound experience through its USB DAC connection to PCs, smartphones, tablets, and more. With support for Native DSD256 and 32 bit/384 kHz playback, the AK HB1 ensures compatibility with a wide array of high-quality audio sources, delivering Astell&Kern’s distinctive premium sound quality.

Furthermore, featuring a renderer function that supports MQA 8X, the AK HB1 allows MQA playback without the necessity for external DACs or playback devices. Simply connect the AK HB1 via cable to compatible devices that support MQA unfolding, and you can enjoy MQA audio playback through network-enabled apps and streaming services, providing a high-resolution audio experience from any location.

Precise DAC and AMP Design for Superior Hi-Fi Sound

The AK HB1 is equipped with ESS’s ES9281AC PRO DAC, delivering exceptional noise control and achieving an unmatched level of ultra-high-quality Hi-Fi sound performance.

Complementing this, the AK HB1 introduces an exclusive AMP circuitry that surpasses standard built-in DAC AMP configurations. The AMP facilitates a robust 4 Vrms output (in Balanced connection) and offers dual connectivity options — 3.5 mm unbalanced and 4.4 mm balanced — catering to a broad spectrum of IEMs and headphones.

Maintaining a compact form factor at 33 x 68.4 x 16.5 mm, meticulous attention was given to the use of micro resistors and capacitor parts to achieve a small footprint without compromising performance. The inclusion of carefully selected ultra-small tantalum capacitors, as found in AK player products, ensures a stable system and optimal audio performance by effectively controlling power fluctuations. Additionally, Astell&Kern’s unique power management technology enhances output and audio performance while minimizing current consumption in consideration of the connected device. The result is a precision-engineered device that delivers an exceptional Hi-Fi sound experience.

Versatile Compatibility and Dual UAC 1.0 & 2.0 Support for Gaming

In the gaming landscape, where compatibility varies, the AK HC4 stands out by accommodating both UAC 2.0 and UAC 1.0 connections. While modern smartphones, tablets, and PCs seamlessly support UAC 2.0, many gaming devices remain exclusive to UAC 1.0 connections.

To ensure a universal fit, the AK HC4 caters to both scenarios, delivering cross-platform high-quality sound experiences. Whether connecting to your PlayStation, Switch, or other gaming devices, the AK HC4 provides low latency and enhanced audio for an immersive gaming experience.

Dual Noise-Shielded Cable for Universal Connectivity

Designed for seamless compatibility with both Android and iOS devices, the AK HC4 comes equipped with an interchangeable cable supporting Type-C and Lightning connections, eliminating the need for additional adapters.

The dual shielded cable of the AK HC4 is engineered to minimize noise and deliver a more vibrant, original sound. Its copper core wire is coated with tin, preventing corrosion and fortifying tensile strength for enhanced durability.

Furthermore, the entire cable is enveloped in an aluminum film to block noise, with an additional layer of shielding around the power cable to further reduce noise – a significant concern in audio quality. To mitigate noise interference to sound, the tin-coated copper wire is intricately woven. The cable is finished with a fabric jacket on top of the TPE jacket, combining enhanced durability with a visually appealing design.