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Astell&Kern AK PA10 Class-A Portable AMP

    Description

    The First Class-A Portable AMP by Astell&Kern

    Astell&Kern has been researching and developing AMP technology to deliver the pure original sound of audio.
    AK PA10 is the first AK model to introduce a Class-A AMP based on Astell&Kern’s know-how in AMP circuit design technology,
    and it offers the natural and spacious analog sound of Class-A AMP enhanced further with our proprietary TERATON ALPHA technology.

    Enjoy the pure analog sound of Astell&Kern with AK PA10's Current / Gain / Crossfeed options for digital audio players and source devices.

    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

    Great headphone AMPs generate true and pure sound reproduction, when not only a stable output is achieved, but also each and every part from power, noise, signal transition, circuit structures, etc., are carefully designed and implemented.
    AK PA10 is small enough to be portable but operates seamlessly with a wide variety of headphones and IEMs, and is enhanced with the addition of TERATON ALPHA technology which is an AK Ultimate Sound Solution allowing for playback of ultra-high quality sound without any distortion.

    TERATON ALPHA, engineered through many years of endless research, is Astell&Kern's unique technology that has been designed to produce audio playback that is as close to the original sound through effective power noise removal, efficient power management and unwavering amplification, and a fully converted audio output interface.
    AK PA10 was developed as the sound solution of TERATON ALPHA, creating pure and intensive analog sounds.

    Distortion-Free Analog Sound of Class-A AMP

    Class-A AMPs offer the best linear output, providing soft, warm, and natural sounds by amplifying signals without distortions or defect. This characteristic makes it the most sought-after amplification method by music lovers, though it is considered impossible for portable audio devices as it requires high power consumption and design that is difficult to be realized for small devices.

    AK PA10 integrates an Class-A AMP based on the unique circuit design technology of Astell&Kern, offering signature analog sounds.

    With a unique circuit design from Astell&Kern that reduces power consumption and increases output while removing noise, AK PA10 is specifically designed to deliver the amazing sounds of an Class-A AMP anywhere and at any time.

    AK PA10, the first portable Class-A AMP of Astell&Kern is here so that you can enjoy analog sounds through your portable devices.

    Class-A Current Control - Intense and Spatial Sound of Analog AMP 

    Headphone AMPs are not just designed to get the output required to operate headphones.
    AK PA10 controls current to suit different headphones and IEMs reproducing a more intensive and spatial sound.

    AK PA10 offers a three-stage control of Class-A AMP current, emphasizing the characteristic of Class-A AMP relative to the current value and creating a more intense sound.
    Also, we addressed the concern of battery drain due to power consumption, the major reason why Class-A AMPs are not sued used for portable devices, by controlling the current value.

    You can create sounds that suit the characteristics of headphones and IEMs through the three-stage current control option.
    We hope you enjoy the textured and spatial sounds that AK PA10’s Class-A AMP can create.

    *[Low] Default / [Mid] +50mA / [High] +100mA

    Vivid Sound Output of Gain Control

    Sufficient AMP output is required to extract all the subtle nuances in music when played back through varying headphones and IEMs.

    When connected to the balanced input, AK PA10 can support up to 6.2 Vrms output at high gain.
    Choose the gain level that offers the best sound of the headphone and IEM that you use to enjoy crystal-clear sounds.
    AK PA10 brings out the full potential that your audio device has to offer.

    *[Low Gain] Unbalanced 2.1Vrms / Balanced 4.2Vrms (Condition No Load)
    *[High Gain] Unbalanced 3.1Vrms / Balanced 6.2Vrms (Condition No Load)

    4.4mm In/Out True Balanced Circuit Design

    Most portable headphone AMPs switch 3.5mm Unbalanced signals to 4.4mm Balanced signals or do not support a 4.4mm Balanced connection at all. Such input/output combinations limit users from using the pure balanced output of the source device resulting in loss of signal during the transition process.

    Rare for a portable Class-A AMP, AK PA10 supports 4.4mm True Balanced input/output for high output and vivid audio.
    It also supports 3.5mm unbalanced input/output ports so that you can use it with a wider variety of devices.

    *Output is available for the same size as the input terminal. (Ports cannot be mixed for use e.g., 3.5→4.4 / 4.4→3.5)

    AK Analog Sound Anywhere and at Any Time

    AK PA10 comes with a built-in 4,200mAh battery for 12 hours of continuous playback time without needing to connect it to a power source.
    Enjoy the analog sound of Astell&Kern anywhere and at any time with AK PA10 which offers great portability and class leading playtime.

    LED battery status indication

    PA10 displays remaining battery and battery charge status through its status LED.

    [Power On] Turned on (Color changes according to the recharge status) White (70% or more) / Yellow (69%-30%) / Red (30% or less)
    [Charging] Blue lights flashing (Regardless of power on/off) → Blue lights comes in when the charging is completed


    Crossfeed Effect Completed by Hardware Circuit Design

    As headphones isolate the left/right channels this can cause increased fatigue to a users ears during extended listening periods, and it offers limited spatial sound by comparison when listening to the same music from speakers.

    Crossfeed mixes some of the signals from one channel and sends them to the opposite channel with a slight delay, creating a more central and natural sound, recreating sounds similar to that of listening via a speaker system, subsequently reducing listening fatigue.

    AK PA10’s Crossfeed function is implemented exclusively by hardware circuit design, not by digital software, offering a more seamless and sophisticated crossfeed effect without degrading the original sound.

    Turn on Crossfeed to experience the vivid, authentic and effortless sound this feature has to offer.

    Perfect Circuit Design of High Output and Low Noise

    Amplifying small signals to get greater outputs inevitably drives the noise level up.
    However, AK PA10 introduces a high output design for the perfect operation of hard to drive headphones, using delicate current control, and a perfect circuit design that is the embodiment of the philosophy of Astell&Kern which continuously aims to deliver pure and refined audio without any noise.

    AK PA10 incorporates our signature analog volume control that seamlessly delivers the sounds of the Class-A AMP. It also has a separate power supply IC per audio block that is divided into crossfeed, volume, AMP, etc., so that it can comfortably supply the optimal power required for each audio IC. This design eliminates the interfering ripple noise (rippling noise that occurs when power is turned on) of DC-DC power, thereby minimizing audio noises that may be amplified along with the audio.

    In addition to this, our proprietary shield can technology is applied so that noises and electromagnetic waves do not affect the audio block and the design that physically separates unbalanced and balanced circuits completes the high-output and low-noise audio.

    Specifications

    General Specifications

    Model

    AK PA10

    Body Color

    Graphite Gray

    Body Material

    Aluminum & Silicone

    Analog Inputs

    Unbalanced 3.5mm / Balanced 4.4mm

    Headphone Outputs Unbalanced 3.5mm / Balanced 4.4mm
    Input Max Level Unbalanced 2Vrms / Balanced 4Vrms

    Output Level

    [Low Gain] Unbalanced 2.1Vrms / Balanced 4.2Vrms (Condition No Load)
    [High Gain] Unbalanced 3.1Vrms / Balanced 6.2Vrms (Condition No Load)

    Dimensions

    2.87" (73mm) [W] x 5.51" (140mm) [H] x 0.91" (23.3mm) [D]

    Weight

    About 11.46oz (325g)

    Charging Port

    USB Type-C

    Operating Temperature

    0°C ~ +40°C (32°F ~ 104°F)

     

    Audio Specifications

    Frequency Response

    [Low Gain] ±0.2dB (Condition: 20Hz~20kHz) Unbalanced / ±0.2dB (Condition: 20Hz~20kHz) Balanced
    [High Gain] ±0.06dB (Condition: 20Hz~70kHz) Unbalanced / ±0.06dB (Condition: 20Hz~70kHz) Balanced

    S/N

    [Low Gain] 111dB @ 1kHz, Unbalanced / 115dB @ 1kHz, Balanced
    [High Gain] 114dB @ 1kHz, Unbalanced / 117dB @ 1kHz, Balanced

    Crosstalk

    [Low Gain] -83dB @ 1kHz Unbalanced / -110dB @ 1kHz Balanced
    [High Gain] -83dB @ 1kHz Unbalanced / -110dB @ 1kHz Balanced

    THD+N [Low Gain] 0.0045% @ 1kHz, Unbalanced / 0.0015% @ 1kHz, Balanced
    [High Gain] 0.0027% @ 1kHz, Unbalanced / 0.0013% @ 1kHz, Balanced

    Output Impedance

    3.5mm (1.1ohm) / 4.4mm (1.3ohm)

     

    Battery

    Capacity

    4,200 mAh 3.8V Li-Polymer

    Charge Time

    About 3 Hours (Standard - 9V / 1.67A Fast Charging)
    About 4 Hours (Standard - 5V / 2A General Charging)

    Playback Time About 12 Hours (Unbalanced / Input - 1Vrms / Low Gain / Volume 30%)

    Astell&Kern AK PA10 Class-A Portable AMP

      Product form

      £549.00 Incl. VAT

      • Dispatch today? Order within: May 21, 2024 14:00:00 +0100

        Description

        The First Class-A Portable AMP by Astell&Kern

        Astell&Kern has been researching and developing AMP technology to deliver the pure original sound of audio.
        AK PA10 is the first AK model to introduce a Class-A AMP based on Astell&Kern’s know-how in AMP circuit design technology,
        and it offers the natural and spacious analog sound of Class-A AMP enhanced further with our proprietary TERATON ALPHA technology.

        Enjoy the pure analog sound of Astell&Kern with AK PA10's Current / Gain / Crossfeed options for digital audio players and source devices.

        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

        Great headphone AMPs generate true and pure sound reproduction, when not only a stable output is achieved, but also each and every part from power, noise, signal transition, circuit structures, etc., are carefully designed and implemented.
        AK PA10 is small enough to be portable but operates seamlessly with a wide variety of headphones and IEMs, and is enhanced with the addition of TERATON ALPHA technology which is an AK Ultimate Sound Solution allowing for playback of ultra-high quality sound without any distortion.

        TERATON ALPHA, engineered through many years of endless research, is Astell&Kern's unique technology that has been designed to produce audio playback that is as close to the original sound through effective power noise removal, efficient power management and unwavering amplification, and a fully converted audio output interface.
        AK PA10 was developed as the sound solution of TERATON ALPHA, creating pure and intensive analog sounds.

        Distortion-Free Analog Sound of Class-A AMP

        Class-A AMPs offer the best linear output, providing soft, warm, and natural sounds by amplifying signals without distortions or defect. This characteristic makes it the most sought-after amplification method by music lovers, though it is considered impossible for portable audio devices as it requires high power consumption and design that is difficult to be realized for small devices.

        AK PA10 integrates an Class-A AMP based on the unique circuit design technology of Astell&Kern, offering signature analog sounds.

        With a unique circuit design from Astell&Kern that reduces power consumption and increases output while removing noise, AK PA10 is specifically designed to deliver the amazing sounds of an Class-A AMP anywhere and at any time.

        AK PA10, the first portable Class-A AMP of Astell&Kern is here so that you can enjoy analog sounds through your portable devices.

        Class-A Current Control - Intense and Spatial Sound of Analog AMP 

        Headphone AMPs are not just designed to get the output required to operate headphones.
        AK PA10 controls current to suit different headphones and IEMs reproducing a more intensive and spatial sound.

        AK PA10 offers a three-stage control of Class-A AMP current, emphasizing the characteristic of Class-A AMP relative to the current value and creating a more intense sound.
        Also, we addressed the concern of battery drain due to power consumption, the major reason why Class-A AMPs are not sued used for portable devices, by controlling the current value.

        You can create sounds that suit the characteristics of headphones and IEMs through the three-stage current control option.
        We hope you enjoy the textured and spatial sounds that AK PA10’s Class-A AMP can create.

        *[Low] Default / [Mid] +50mA / [High] +100mA

        Vivid Sound Output of Gain Control

        Sufficient AMP output is required to extract all the subtle nuances in music when played back through varying headphones and IEMs.

        When connected to the balanced input, AK PA10 can support up to 6.2 Vrms output at high gain.
        Choose the gain level that offers the best sound of the headphone and IEM that you use to enjoy crystal-clear sounds.
        AK PA10 brings out the full potential that your audio device has to offer.

        *[Low Gain] Unbalanced 2.1Vrms / Balanced 4.2Vrms (Condition No Load)
        *[High Gain] Unbalanced 3.1Vrms / Balanced 6.2Vrms (Condition No Load)

        4.4mm In/Out True Balanced Circuit Design

        Most portable headphone AMPs switch 3.5mm Unbalanced signals to 4.4mm Balanced signals or do not support a 4.4mm Balanced connection at all. Such input/output combinations limit users from using the pure balanced output of the source device resulting in loss of signal during the transition process.

        Rare for a portable Class-A AMP, AK PA10 supports 4.4mm True Balanced input/output for high output and vivid audio.
        It also supports 3.5mm unbalanced input/output ports so that you can use it with a wider variety of devices.

        *Output is available for the same size as the input terminal. (Ports cannot be mixed for use e.g., 3.5→4.4 / 4.4→3.5)

        AK Analog Sound Anywhere and at Any Time

        AK PA10 comes with a built-in 4,200mAh battery for 12 hours of continuous playback time without needing to connect it to a power source.
        Enjoy the analog sound of Astell&Kern anywhere and at any time with AK PA10 which offers great portability and class leading playtime.

        LED battery status indication

        PA10 displays remaining battery and battery charge status through its status LED.

        [Power On] Turned on (Color changes according to the recharge status) White (70% or more) / Yellow (69%-30%) / Red (30% or less)
        [Charging] Blue lights flashing (Regardless of power on/off) → Blue lights comes in when the charging is completed


        Crossfeed Effect Completed by Hardware Circuit Design

        As headphones isolate the left/right channels this can cause increased fatigue to a users ears during extended listening periods, and it offers limited spatial sound by comparison when listening to the same music from speakers.

        Crossfeed mixes some of the signals from one channel and sends them to the opposite channel with a slight delay, creating a more central and natural sound, recreating sounds similar to that of listening via a speaker system, subsequently reducing listening fatigue.

        AK PA10’s Crossfeed function is implemented exclusively by hardware circuit design, not by digital software, offering a more seamless and sophisticated crossfeed effect without degrading the original sound.

        Turn on Crossfeed to experience the vivid, authentic and effortless sound this feature has to offer.

        Perfect Circuit Design of High Output and Low Noise

        Amplifying small signals to get greater outputs inevitably drives the noise level up.
        However, AK PA10 introduces a high output design for the perfect operation of hard to drive headphones, using delicate current control, and a perfect circuit design that is the embodiment of the philosophy of Astell&Kern which continuously aims to deliver pure and refined audio without any noise.

        AK PA10 incorporates our signature analog volume control that seamlessly delivers the sounds of the Class-A AMP. It also has a separate power supply IC per audio block that is divided into crossfeed, volume, AMP, etc., so that it can comfortably supply the optimal power required for each audio IC. This design eliminates the interfering ripple noise (rippling noise that occurs when power is turned on) of DC-DC power, thereby minimizing audio noises that may be amplified along with the audio.

        In addition to this, our proprietary shield can technology is applied so that noises and electromagnetic waves do not affect the audio block and the design that physically separates unbalanced and balanced circuits completes the high-output and low-noise audio.

        Specifications

        General Specifications

        Model

        AK PA10

        Body Color

        Graphite Gray

        Body Material

        Aluminum & Silicone

        Analog Inputs

        Unbalanced 3.5mm / Balanced 4.4mm

        Headphone Outputs Unbalanced 3.5mm / Balanced 4.4mm
        Input Max Level Unbalanced 2Vrms / Balanced 4Vrms

        Output Level

        [Low Gain] Unbalanced 2.1Vrms / Balanced 4.2Vrms (Condition No Load)
        [High Gain] Unbalanced 3.1Vrms / Balanced 6.2Vrms (Condition No Load)

        Dimensions

        2.87" (73mm) [W] x 5.51" (140mm) [H] x 0.91" (23.3mm) [D]

        Weight

        About 11.46oz (325g)

        Charging Port

        USB Type-C

        Operating Temperature

        0°C ~ +40°C (32°F ~ 104°F)

         

        Audio Specifications

        Frequency Response

        [Low Gain] ±0.2dB (Condition: 20Hz~20kHz) Unbalanced / ±0.2dB (Condition: 20Hz~20kHz) Balanced
        [High Gain] ±0.06dB (Condition: 20Hz~70kHz) Unbalanced / ±0.06dB (Condition: 20Hz~70kHz) Balanced

        S/N

        [Low Gain] 111dB @ 1kHz, Unbalanced / 115dB @ 1kHz, Balanced
        [High Gain] 114dB @ 1kHz, Unbalanced / 117dB @ 1kHz, Balanced

        Crosstalk

        [Low Gain] -83dB @ 1kHz Unbalanced / -110dB @ 1kHz Balanced
        [High Gain] -83dB @ 1kHz Unbalanced / -110dB @ 1kHz Balanced

        THD+N [Low Gain] 0.0045% @ 1kHz, Unbalanced / 0.0015% @ 1kHz, Balanced
        [High Gain] 0.0027% @ 1kHz, Unbalanced / 0.0013% @ 1kHz, Balanced

        Output Impedance

        3.5mm (1.1ohm) / 4.4mm (1.3ohm)

         

        Battery

        Capacity

        4,200 mAh 3.8V Li-Polymer

        Charge Time

        About 3 Hours (Standard - 9V / 1.67A Fast Charging)
        About 4 Hours (Standard - 5V / 2A General Charging)

        Playback Time About 12 Hours (Unbalanced / Input - 1Vrms / Low Gain / Volume 30%)

        The Joe Audio Promise

        As a specialist supplier of some of the greatest equipment to our customers, we set ourselves high standards that match our amazing products and always strive to offer..

        • The latest and greatest equipment available at all times
        • FREE shipping anywhere within the UK
        • Specialist advice available from our customer service team

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