Highlights

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Hugo 2 once again impresses as a high-quality DAC and headphone amplifier, building on the innovative original from 2014. Ideal for use at home or on the move, Hugo 2 unobtrusively drives the sound quality of headphones and audio systems to peak performance through its advanced, proprietary DAC technology and delivers even more impressive sound quality thanks to the latest FPGA technology.

With the ability to play high-res files up to 768 kHz / DSD512 and the included remote control for seamless integration into stationary systems, the HUGO 2 sets new standards.

The HUGO2 positions itself as the most versatile headphone amplifier on the market! On the go, Bluetooth and the two rechargeable batteries provide up to 7 hours of uninterrupted music enjoyment. At home, the HUGO 2 drives even the most demanding hi-fi headphones to peak performance or uses its advanced D/A converter technology for perfect integration into the home audio system.

Features Chord Hugo 2

• Chord Custom FPGA DAC
• Bluetooth aptX
• Optical digital input (up to 192 kHz/24 bit)
• Digital electrical input (up to 384 kHz/24 bit)
• Micro USB (up to 768 kHz/32 bit, up to DSD512)
• USB charging port

Connection

The device has four digital inputs (optical, coaxial and HD USB) as well as wireless Bluetooth® technology with extended range. The HD USB input supports playback of high-resolution files up to 768 kHz and up to DSD512 (Octa DSD). The analog outputs include 2x RCA as well as 3.5 mm and 6.35 mm headphone outputs.

Customizable

A four-way switchable filter allows custom frequency shaping for warm and smooth or transparent and sharp reproduction, giving the user additional flexibility and control. For listening through headphones, Hugo 2 retains the popular digital crossfeed feature of the original and offers three modes of operation that duplicate the effect of listening through speakers, based on advanced binaural audio research.

Control

Hugo 2 is equipped with four spherical control buttons that are illuminated with colored information and control the device’s power supply, input, filtering and crossfeed functions.

Endurance

With a battery life of around 6 hours+ (depending on the headphones) and two modes for automatic charging via the dedicated micro USB charging port, Hugo 2 ensures uninterrupted music enjoyment. A display shows the charging and battery status.

In the box

• HUGO2 headphone amplifier
• remote control
• Charger 2.1A with 1.75 m cable => micro USB
• 1.2 m USB => micro USB cable
• 15 cm micro USB => micro USB cable
• 1 m optical cable
• 20 cm mini jack 3.5 mm optical => Toslink
• Accessory bag
• Instruction manual

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Probably the best-known portable DAC & headphone amplifier in the world. Now in its second edition, it continues to inspire and continues to find new friends.

Features Chord Mojo 2

• Modern USB-C connection (data)
• World’s first lossless UHD DSP
• New menu system via the fourth control ball
• Improved FPGA, resulting in more power and efficiency
• Improved battery management, resulting in greater capacity and intelligent desktop mode
• Expandable with Chord Electronics Poly Streamer

DAC and headphone amplifier

Designed and manufactured in the UK, the Mojo 2 sets new standards as one of the most advanced portable DACs and headphone amplifiers in the world.

This sets the Mojo 2 apart from other devices. It uses proprietary British digital audio technology, perfected over more than two decades, combined with a powerful ‘FPGA’ processor.

The result is unsurpassed sound quality, whether on the move or at home, with the ability to drive any headphone effortlessly. The Mojo 2 provides a music experience that is as close to the source as possible. It brings you closer to the music than any other portable device, and does so with ease.

Unique FPGA technology

For over 25 years, Chord Electronics has consistently used high-performance programmable (FPGA) circuitry with custom programming to achieve the world’s most advanced digital-to-analog conversion performance. The Mojo 2 benefits from these decades of experience and incorporates digital audio technologies that have been continuously perfected over two decades. This makes the Mojo 2 an outstanding small DAC with unsurpassed sound quality, impressively proven by extensive technical measurements in the laboratory.

Revolutionary UHD DSP for unparalleled sound fidelity

The Chord Mojo 2 is the first device of its kind in the world to integrate a lossless UHD DSP that redefines audiophile standards. Immerse yourself in a world of sound where every sound is reproduced in its purest form and experience a fidelity that has never been achieved before.

Intuitive menu system with innovative controls

The Chord Mojo 2 presents a new menu system that is operated via the fourth control ball. This innovative control method allows you to effortlessly navigate through the device’s functions, giving you full control over your soundscape.

Intelligent battery management for maximum endurance

The Chord Mojo 2’s improved battery management not only provides greater capacity, but also an intelligent desktop mode. Experience longer runtimes and optimized performance while taking full advantage of the device’s versatility.

USB-C connectivity of the future

The Chord Mojo 2 relies on a modern USB-C port for data transfer that is not only fast and reliable, but also offers future-proof connectivity. With this contemporary connector, you can connect your audio sources with ease and benefit from smooth data transfer.

Chord Electronics Poly Streamer – Expand your possibilities

The Chord Mojo 2 is expandable with the Chord Electronics Poly Streamer. Use this optional extension to transform the device into a versatile music system and take your audio experience to the next level.

With the Chord Mojo 2 you will experience the future of audio technology – advanced, powerful and incomparable.

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The ACRO CA1000T completes your dream head-fi audio system, providing an authentic Astell&Kern sound experience. Its features include a dual-tube applied Triple Amp System, four levels of gain suitable for detailed IEMs and demanding headphones, and ESS Technology’s flagship ES9039MPRO Dual-DAC for exceptional audio performance.

Comprehensive Head-Fi Audio Solution: ACRO CA1000T

• Featuring the groundbreaking ES9039MPRO Dual-DAC for the inaugural time
• Effortlessly power a wide range of headphones/IEMs with 4 selectable gain levels and a remarkable 15Vrms output
• Incorporating a Triple Amp System with a dual-vacuum tube to offer a Hybrid sound experience
• Diverse input and output options ensure extensive connectivity and compatibility
• Designed with a built-in battery, enhancing portability and delivering optimal power performance

Excellence in Head-Fi Sound

The ACRO CA1000T transcends the constraints of a conventional headphone amp by offering an ideal Head-Fi audio system that can be set up anywhere and operates autonomously through its internal battery supply.

Featuring a built-in high-power headphone amplifier, the ACRO CA1000T delivers intricate headphone sound without the need for external connections to other devices. As an all-in-one Head-Fi audio system, it ensures excellent connectivity with external audio devices and speakers through a versatile array of input/output ports. This enables seamless enjoyment of network audio playback and music streaming, providing a comprehensive and convenient audio solution.

Versatile Connectivity Options

The ACRO CA1000T offers an extensive range of input/output options that can meet the needs of audiophiles looking to build their ideal Head-Fi system with maximum utility.
For greater ease of use, you can change the input/output settings using the touch screen on top of the product while multiple cables and devices are connected.

TERATON ALPHA, The Essence of AK Audio Technologies

TERATON ALPHA stands as the quintessence of Astell&Kern’s audio technologies, embodying the pinnacle of their audio engineering prowess.

This cutting-edge technology represents a significant advancement in audio processing. TERATON ALPHA aims to deliver an unparalleled audio experience, characterized by pristine sound reproduction, enhanced clarity, and a heightened sense of musical detail.

As the cornerstone of AK’s audio innovations, TERATON ALPHA reflects the brand’s commitment to pushing the boundaries of audio excellence. It is designed to extract the maximum potential from high-quality sound sources, providing audiophiles with an immersive and true-to-life listening experience. In essence, TERATON ALPHA represents the culmination of Astell&Kern’s dedication to advancing audio technologies and setting new standards in the world of high-fidelity sound.

4 Gain Stages And an output power of up to 15Vrms for the perfect Head-Fi Setup

The ACRO CA1000T sets the stage for the perfect Head-Fi setup with its 4-level gain options and an impressive up to 15Vrms output. Achieving an ideal match between the source and the receiving device is crucial for delivering impeccable sound, especially when dealing with intricate IEMs and demanding headphones.

This audio powerhouse supports four gain levels, enabling users to tailor the output to the specific characteristics and sound profiles of their headphones. The flexibility of these gain settings allows for precise adjustments, ensuring an optimal and customized volume output. With a robust up to 15 Vrms output, it effortlessly handles high-impedance headphones with grace.

Enhancements to the electrical capacity of the output ports add stability when accommodating devices with varying impedances at different gain levels. The separate controls for balanced and unbalanced volumes optimize electricity flow, effectively minimizing noise and maximizing sound quality.

In the realm of audio perfection, the ACRO CA1000T promises an immersive experience, delivering optimal device performance and pure, soul-stirring sound.

Complete Balanced Circuit with Dual-Tube Design

Incorporating dual Twin Triode KORG Nutube tubes, a technology initially introduced in AK’s award-winning SP2000T, the ACRO CA1000T delivers an advanced tube sound experience.

In cases where a product is equipped with a Dual DAC and a single vacuum tube, a distinct circuit becomes necessary to convert the signal to a balanced state just before reaching the output terminal. This configuration involves a process to transform an unbalanced signal into a balanced one, a step during which noise may be amplified.
In contrast, the CA1000T features a fully balanced circuit, utilizing two vacuum tubes to independently separate the left and right channels, resulting in more natural and smoother audio tones.

Whether in Tube AMP mode or OPAMP, both modes deliver a robust 15 Vrms output, while the headphone ports provide an opportunity to savor the distinctive tones of vacuum tubes without any restrictions.

TRIPLE AMP SYSTEM: The Evolution in AMP Technology

The ACRO CA1000T goes beyond conventional AMP Mode selection based on music genres. Choose from TUBE AMP mode, OP AMP mode, or the innovative HYBRID AMP mode.

OP AMP mode leverages Astell&Kern’s AMP technology expertise, delivering exceptional clarity and dynamic sound. TUBE AMP mode, on the other hand, imparts a distinctively warm and musical audio signature.

Introducing a pioneering feature for digital audio players, the HYBRID AMP mode elevates the resolution and clarity of the existing TUBE AMP mode, revealing intricate musical details. By blending the benefits of retro analog performance with high-resolution output, HYBRID AMP mode introduces a novel tonal characteristic, providing a unique auditory experience.

Explore the unparalleled sound enhancements offered by this advanced AMP technology. The TRIPLE AMP SYSTEM in the ACRO CA1000T sets a new standard for audio amplification, allowing you to tailor your listening experience to your preferences.

Tailored Design for Microphonic Noise Reduction

The ACRO CA1000T features a specialized custom design crafted to minimize microphonic noise originating from external shocks and vibrations.

In addressing the inherent structural challenge of vacuum tubes, susceptible to generating microphonic noise even from the slightest shocks or vibrations, AK has engaged in iterative design development. Rigorous testing and prototyping led to a solution where both sides of the vacuum tube are securely enveloped in flexible silicon covers. This design minimizes the impact of shocks, and a magnetic force is strategically employed to physically isolate the tube from the PCB. The result is enhanced stability and isolation, ensuring optimal performance when the tube is in operation.

Astell&Kern remains dedicated to meticulously designing these minute elements and nuances that sets their products apart, contributing to the unparalleled distinction in sound compared to competitors.

ASTELL & KERN ACRO CA1000 Specifications

• Frequency Response
• ±0.031dB (Condition : 20Hz~20kHz) Unbalanced / ±0.029dB (Condition : 20Hz~20kHz) Balanced /
• ±0.033dB (Condition : 20Hz~20kHz) RCA / ±0.002dB (Condition : 20Hz~20kHz) XLR
• ±0.079dB (Condition : 20Hz~70kHz) Unbalanced / ±0.029dB (Condition : 20Hz~70kHz) Balanced /
• ±0.080dB (Condition : 20Hz~70kHz) RCA / ±0.008dB (Condition : 20Hz~70kHz) XLR
• S/N 108dB @ 1kHz, Unbalanced / 112dB @ 1kHz, Balanced / 121dB @ 1kHz, RCA / 128dB @ 1kHz, XLR
• Crosstalk -115dB @ 1kHz, Unbalanced / -112dB @ 1kHz, Balanced / -138dB @ 1kHz, RCA / -145dB @ 1kHz, XLR
• THD+N 0.004% @ 1kHz, Unbalanced / 0.002% @ 1kHz, Balanced / 0.0005% @ 1kHz, RCA / 0.0003% @ 1kHz, XLR
• IMD SMPTE 0.0007% 800Hz 10kHz (4:1) Unbalanced / 0.0007% 800Hz 10kHz (4:1) Balanced /0.0007% 800Hz 10kHz (4:1) RCA / /0.0007% 800Hz 10kHz (4:1) XLR
• Output Impedance 3.5mm, 6.35mm (1ohm) / 2.5mm, 4.4mm (2ohm) / RCA (4ohm) / XLR (9ohm)
• Clock Jitter 25ps (Typ)
• Reference Clock Jitter 70ps
• Memory 256GB
• External Memory microSD x1 (Max. 1TB)

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With AK PA10, immerse yourself in the unadulterated analog sound signature of Astell&Kern. This device offers a range of options, including Current, Gain, and Crossfeed settings, tailored for digital audio players and source devices. Elevate your audio experience and enjoy the pure, nuanced sound that Astell&Kern is renowned for.

The First Class-A Portable AMP by Astell&Kern

Astell&Kern has dedicated extensive research and development efforts to advance AMP technology, aiming to faithfully reproduce the pristine, original sound of audio recordings. The AK PA10 stands as the pioneering model in the Astell&Kern lineup, introducing a Class-A AMP built on the brand’s profound expertise in AMP circuit design technology. This innovative device presents the authentic and expansive analog sound characteristic of Class-A AMP, further enriched by Astell&Kern’s proprietary TERATON ALPHA technology.

Main Features

• Application of Class-A AMP
• Class-A Current Control (High / Mid / Low)
• Gain Control (High Gain / Low Gain)
• 4.4mm True Balanced input/output support
• 3.5mm Unbalanced input/output support
• Hardware crossfeed support
• Unique SLOPE design of Astell&Kern
• Up to 12 hrs of play time
• Power and Battery Indicator
• C-Type USB charger

TERATON ALPHA, The Essence of A&K Audio Technologies

Superior headphone amplifiers achieve genuine and unaltered sound reproduction by not only ensuring a stable output but also meticulously designing and implementing each aspect, including power, noise, signal transition, circuit structures, and more.

The AK PA10, while compact and portable, seamlessly interfaces with a diverse range of headphones and IEMs. It is further enhanced by the incorporation of TERATON ALPHA technology, Astell&Kern’s ultimate sound solution. This technology enables the playback of ultra-high-quality sound without any distortion.

TERATON ALPHA, the result of extensive research over many years, represents Astell&Kern’s distinctive approach to achieving audio playback that faithfully preserves the original sound. It accomplishes this through effective power noise removal, efficient power management, unwavering amplification, and a fully converted audio output interface.

The AK PA10 has been meticulously developed as the embodiment of TERATON ALPHA, delivering pure and immersive analog sounds for an unparalleled audio experience.

Experience Distortion-Free Analog Sound with Class-A AMP

Class-A amplifiers are renowned for providing the best linear output, delivering soft, warm, and natural sounds by amplifying signals without introducing distortions or defects. This sought-after amplification method is highly favored by music enthusiasts, even though it has traditionally been considered impractical for portable audio devices due to its high power consumption and the challenges of implementing it in small devices.

The AK PA10 breaks these barriers by integrating a Class-A amplifier based on Astell&Kern’s unique circuit design technology, ensuring the delivery of signature analog sounds.

Employing a distinctive circuit design from Astell&Kern, the AK PA10 not only reduces power consumption but also increases output while effectively eliminating noise. This design is specifically crafted to bring the exceptional sounds of a Class-A amplifier to any location and at any time.

Introducing the AK PA10, Astell&Kern’s first portable Class-A amplifier, allowing you to enjoy the rich analog sounds through your portable devices without compromising on quality.

Class-A Current Control – Elevating the Analog AMP Experience with Intense and Spatial Sound

Headphone amplifiers go beyond merely providing the necessary output for headphone operation. The AK PA10 takes it a step further by meticulously controlling the current to match different headphones and IEMs, resulting in a more immersive and spatial sound reproduction.

The AK PA10 introduces a three-stage control of Class-A amplifier current, accentuating the distinctive characteristics of Class-A AMP in relation to the current value and producing a more intense audio experience. Addressing the concern of battery drain associated with power consumption—often a hindrance for Class-A AMPs in portable devices—the AK PA10 adeptly manages the current value.

This three-stage current control option empowers users to tailor the sound to the unique characteristics of their headphones and IEMs. Immerse yourself in the textured and spatial sounds that the AK PA10’s Class-A AMP can finely craft, offering a heightened audio experience that caters to your individual preferences.

Immersive Sound Precision with Gain Control

To capture the intricate details in music across different headphones and IEMs, a robust amplifier output is essential.

When utilizing the balanced input, the AK PA10 boasts an impressive capability, supporting up to 6.2 Vrms output at high gain. Tailor the gain level to match the unique characteristics of your headphones and IEMs, ensuring a crystal-clear and vivid sound experience.

With AK PA10, unlock the full potential of your audio device, delivering an unparalleled audio output that accentuates the richness and subtleties of your favorite music. Choose the optimal gain setting to enjoy a truly immersive and refined sound output.

Revolutionary 4.4mm In/Out True Balanced Circuit Design

Unlike many portable headphone amplifiers that convert 3.5mm Unbalanced signals to 4.4mm Balanced signals or lack support for a 4.4mm Balanced connection altogether, the AK PA10 takes a groundbreaking approach. Most devices compromise the purity of the balanced output during signal transition.

In a unique feat for a portable Class-A amplifier, the AK PA10 proudly features 4.4mm True Balanced input/output, ensuring high output and delivering a vivid audio experience without signal loss during the transition process. Additionally, it caters to a broader range of devices by supporting 3.5mm unbalanced input/output ports.

Experience the true potential of balanced audio with the AK PA10’s innovative design, providing users with flexibility and uncompromised sound quality across various devices.

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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 aptXHD 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.

Product Safety

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A&K HC4 – Your Gateway to Hi-Fi Sound

Astell&Kern presents a range of Hi-Fi USB DAC cables designed for an authentic Hi-Fi experience on smartphones and PCs. The compact design of Astell&Kern’s Hi-Fi USB DAC cables has earned accolades from numerous audiophiles and media outlets.

The AK HC4 builds on the success of its highly praised predecessors, offering further refined sound in various usage scenarios through advanced design elements. With Dual Output compatibility for a wide range of IEMs and headphones, the inclusion of the AK4493S DAC for genuine Hi-Fi sound, and the integration of Digital Audio Remaster technology, the AK HC4 brings the elevated Hi-Fi sound quality previously reserved for Astell&Kern’s digital audio players to a USB DAC cable. Immerse yourself in a Hi-Fi sound experience like never before.

Sophisticated Design Harmony in a Compact Form

Despite its compact size, the AK HC4 embodies Astell&Kern’s signature design philosophy, Light and Shadow, incorporating simple yet intricate design elements. The adoption of a unibody structure minimizes bonding lines, resulting in a smooth and clean appearance that enhances the overall aesthetic.

The product’s design skillfully mitigates the visual impact of the simultaneous 3.5mm and 4.4mm Dual Output, minimizing the perceived size burden. Notably, the symmetrical left and right front edge lines converge at the center, creating a balanced visual focus.

Concave lines on the sides contribute to an ergonomic design, ensuring ease and comfort in handling, naturally tailored to the human hand. The keys on the sides are either raised at both ends or feature dot-embossed details, facilitating intuitive use with the sensation of fingertips. The AK HC4 is a harmonious blend of form and function, embodying Astell&Kern’s commitment to both style and usability.

Main Features

• 3.5mm, 4.4mm Dual Output
• AKM AK4493S
• DAR (Digital Audio Remaster)
• Supports iOS devices
• Interchangeable Cable (Type-C / Lightning Cable Included)
• Supported UAC1.0 (For Gaming System)
• Roon Tested

Experience ultra-high-resolution sound with A&K HC4

In an effort to achieve the pinnacle of audio quality in USB DACs, the AK HC4 stands out as the first in the USB DAC Cable lineup to feature AKM’s DAC. While AKM’s DAC has garnered admiration in Astell&Kern’s digital audio players, integrating it into USB DAC Cables has been challenging due to size constraints and amp design complexities—until now.

The AK4493s DAC, employed in the AK HC4, undergoes further enhancement with improved noise control, a lower power design, and ultra-precise amp design technology. This results in delivering exceptionally high-quality Hi-Fi sound. Moreover, the AK HC4 supports Native DSD256 and up to 32bit/384kHz, catering to any high-quality audio source and allowing you to immerse yourself in the superior sound quality synonymous with Astell&Kern.

Crafting High-Fidelity Sound: Precision DAC and AMP Design

To ensure a stable output power and deliver an unparalleled Hi-Fi sound experience with Dual Output capability, the AK HC4 introduces an exclusive AMP circuitry that surpasses standard built-in DAC AMP configurations.

Maintaining a compact form factor of 29.5 x 64.5 x 14.5mm, we have employed micro resistors and capacitor parts, allowing us to achieve a small footprint without compromising performance. Our meticulous selection of ultra-small tantalum capacitors, a hallmark of AK player products, ensures a stable system and impeccable audio performance by effectively managing power fluctuations. These capacitors are integral to our optimal audio circuit design. Furthermore, Astell&Kern’s unique power management technology enhances output and audio performance, minimizing current consumption in consideration of the connected device.

3.5mm, 4.4mm Dual Output

The AK HC4 boasts Dual Output functionality, featuring both 3.5mm and 4.4mm connectors. This design allows seamless compatibility with a wide range of Hi-Fi IEMs and headphones, eliminating the need for adapters or additional cables.

The 4.4mm Balanced output delivers a robust output of 3Vrms, optimizing the performance of sensitive headphones and IEMs. This configuration ensures clear channel separation and minimal noise for an enhanced audio experience.

On the other hand, the 3.5mm Unbalanced output is designed to work with the majority of existing IEMs and headphones. With a substantial output of 2Vrms, it provides ample power to fully unleash the capabilities of your IEMs.

Enhanced Original Sound with Digital Audio Remaster Technology

Unlocking a new dimension of audio fidelity, the AK HC4 features Digital Audio Remaster (DAR) technology, previously exclusive to the latest digital audio players by Astell&Kern.

DAR technology is designed to upsample the sample rate of the playing sound source, surpassing the limits of the original format. This elevated sample rate enables a more refined playback, delivering delicate and analog-like original sound. Immerse yourself in the richness of the source audio, discerning subtle nuances and enjoying a higher level of rich, vibrant sounds.

For added convenience, the DAR slide key on the product’s side provides an intuitive selection of DAR options, putting enhanced control at your fingertips.

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.

Silent Rear Output Architecture

The AK HC4 adopts a noise-minimizing rear audio output design, distinguishing it from conventional USB DAC products. In typical setups, DACs are often situated within the USB terminal directly connected to the device for audio processing and output.

In contrast, the HC4 employs a unique approach. Digital signals from the device traverse a dual shielded cable, reaching the audio circuit before undergoing conversion to an analog signal by the DAC. This sequential processing of the digital signal ensures a superior, noise-free sound experience, setting the AK HC4 apart from other USB DAC products.

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.

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