Astell&Kern AK PA10 Portable Class-A Amplifier

1-Year Local Warranty.


Any mention of "us," "we," "our," etc is by Astell&Kern, not AV One.


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 analogue sound of Class-A AMP enhanced further with our proprietary TERATON ALPHA technology.

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


  • Application of Class-A AMP
  • Class-A Current Control (High / Mid / Low)
  • Gain Control (High Gain / Low Gain)
  • 4mm True Balanced input/output support
  • 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


Distortion-free Analogue 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 realised for small devices.

AK PA10 integrates an Class-A AMP based on the unique circuit design technology of Astell&Kern, offering signature analogue 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 analogue 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, emphasising 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 Analogue Sound Anywhere and at Any Time

AK PA10 comes with a built-in 4,200 mAh battery for 12 hours of continuous playback time without needing to connect it to a power source.

Enjoy the analogue sound of Astell&Kern anywhere and at any time with AK PA10 which offers great portability and class leading playtime.


General Specifications

Model: AK PA10

Body Colour: Graphite Grey

Body Material: Aluminium & Silicone

Analogue 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 C Type

Operating Temperature: 0℃ ~ + 40℃ (32℉~ 104℉)

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