Astell&Kern PA10 - Portable Class-A headphone amplifier

Delivery time approx. 1 week

Astell&Kern's First Portable Class-A Amplifier

Astell&Kern has researched and developed AMP technology to deliver the pure original sound of audio. The AK PA10 is the first AK model to introduce a Class-A amplifier based on Astell&Kern's expertise in AMP circuit technology. 

The PA10 offers the natural and spatial analog sound of a Class-A amplifier, further enhanced by our proprietary TERATON ALPHA technology. Enjoy the pure analog sound of Astell&Kern with the Current / Gain / Crossfeed options of the AK PA10 for digital audio players and source devices.

Highlights

• Class-A Current Control (High/Medium/Low)
• Gain Control (High Gain / Low Gain)
• Support for 4.4 mm True Balanced Input/Output
• Support for Unbalanced 3.5mm Inputs and Outputs
• Hardware Crossfeed Support
• Unique SLOPE Design by Astell&Kern
• Up to 12 Hours Playtime
• Power and Battery Indicator
• C-Type USB Charger

TERATON ALPHA, The Heart of A&K Audio Technologies

Great headphone amplifiers produce an uncolored and pure sound reproduction when not only a stable output is realized, but also every single component, from the power supply, noise, signal transition to the circuit structures, is carefully designed and implemented.
The AK PA10 is small enough to be portable, yet works seamlessly with a variety of headphones and IEMs, enhanced by TERATON ALPHA technology, which represents AK's ultimate sound solution and enables playback of ultra-high-quality sound without any distortion.

TERATON ALPHA is a unique technology from Astell&Kern, developed through years of research to enable audio playback very close to the original sound through effective noise suppression, efficient power management, unaltered amplification, and a fully converted audio output interface.
AK PA10 was developed as a sound solution for TERATON ALPHA and produces pure and intense analog sounds.

Distortion-free analog sound of a Class-A amp

Class-A amplifiers provide the best linear output performance and deliver smooth, warm, and natural sounds by amplifying signals without distortion or defects. This characteristic makes them the most sought-after amplification method among music lovers, although they are considered impossible for portable audio devices due to their high power consumption and a design that is difficult to realize in small devices.

The AK PA10 features a Class-A amplifier based on Astell&Kern's unique circuit technology, offering distinctive analog sounds.

Thanks to Astell&Kern's unique circuit design that reduces power consumption, increases output power, and eliminates noise at the same time, the AK PA10 was specially developed to deliver the amazing sounds of a Class-A amplifier anywhere and anytime.

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

Class-A current control - intense and spatial sound of an analog AMP

Headphone amplifiers are not only designed to achieve the power required to operate headphones.
The AK PA10 controls the current to adapt to various headphones and IEMs that reproduce a more intense and spatial sound.

The AK PA10 offers a three-level control of the Class-A AMP current, highlighting the characteristic of the Class-A AMP in terms of current value and producing a more intense sound.
By controlling the current value, we have also solved the problem of battery drain due to power consumption - the main reason why Class-A amps are not used for portable devices.

The three-level current control allows you to create sounds that match the characteristics of headphones and IEMs.
We hope you enjoy the structured and spatial sounds that the Class-A amp of the AK PA10 can produce.

Vivid sound output with Gain Control

A sufficient AMP output is required to hear all the subtle nuances in the music when played through various headphones and IEMs.

When the AK PA10 is connected to the symmetrical input, it can output up to 6.2 Vrms at high gain.
Choose the gain level that provides the best sound for the headphones or IEMs you use to enjoy crystal-clear sounds.
The AK PA10 brings out the full potential of your audio device.

4.4mm In/Out True Balanced circuit design

Most portable headphone amplifiers convert asymmetrical 3.5 mm signals to symmetrical 4.4 mm signals or do not support symmetrical 4.4 mm connections at all.
Such input/output combinations prevent the user from utilizing the pure symmetrical output of the source device, causing signal loss during switching.

Rare for a portable Class-A amplifier, the AK PA10 supports a 4.4 mm True Balanced input/output for high performance and vivid sound.
It also supports asymmetrical 3.5 mm input/output jacks, allowing you to use it with a wider range of devices.

AK analog sound anywhere and anytime

The AK PA10 has a built-in 4,200 mAh battery for 12 hours of uninterrupted playback without needing to be connected to a power source.
Enjoy the analog sound of Astell&Kern anywhere and anytime with the AK PA10, which features great portability and premium playback time.

Playback time

LED Battery Status Indicator

The PA10 indicates the remaining battery and charging status via its status LED.

[ Power On ] Turned on (color changes depending on battery status) White (70% or more) / Yellow (69%-30%) / Red (30% or less)

[ Laden ] Blue light blinks (regardless of power on/off) → Blue light stays on when charging is complete

General Specifications

• Model AK PA10
• Case Color Graphite Gray
• Case Material Aluminium & Silicone
• Analog Inputs Unbalanced 3.5 mm / Balanced 4.4 mm
• Headphone Outputs Unbalanced 3.5 mm / Balanced 4.4 mm
• Maximum Input Level Unbalanced 2Vrms / Balanced 4Vrms
• Output Level [Low Gain] Unbalanced 2.1Vrms / Balanced 4.2Vrms (No Load Condition), [High Gain] Unbalanced 3.1Vrms / Balanced 6.2Vrms (No Load Condition)
• Dimensions 2.87"(73mm)[B] x 5.51"(140mm)[H] x 0.91"(23.3mm)[T]
• Weight approx. 325g (11.46oz)
• Charging Port Type USB C
• Operating Temperature 0℃ ~ + 40℃ (32℉~ 104℉)