Astell&Kern PA10 | Portable Class-A Headphone Amp

A&K presents the PA10 Class-A Portable AMP

Class-A AMP with Current, Gain & Crossfeed Controls
4.4mm & 3.5mm input/output support
12 hours of playback, power & battery indicator
Type-C USB charger


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 A&K’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 A&K with AK PA10’s Current/Gain/Crossfeed options for digital audio players and source devices.
Key Features

Class-A Current Control (High/Mid/Low)
Gain Control (High Gain/Low Gain)
4.4mm True Balanced 3.5mm Unbalanced In/Out Support
Hardware Crossfeed Support
Unique SLOPE Design of Astell&Kern
Up to 12 Hours of Play Time
Power and Battery Indicator
USB Type-C Charger

TERATON ALPHA
Great headphone Amps generate true and pure sound reproduction, when not only a stable output is realized, but also when each and every component from power, noise, signal transition, and circuit structures 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, an AK Ultimate Sound Solution allowing for playback of ultra-high quality sound without any distortion.
Engineered through many years of endless research, Teraton Alpha is A&K's unique technology designed to produce audio playback as close as possible to the original sound through effective power noise removal, efficient power management, unwavering amplification, and a fully converted audio output interface.
Distortion-free Class-A Amp Analog Sound
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. However, it is considered impossible for portable audio devices due to its high power consumption and larger footprint design requirements.
PA10 integrates a Class-A Amp based on unique circuit design technology of Astell&Kern, offering signature analog sounds. It's the first Astell&Kern portable Class-A Amp, designed so that you can enjoy analog sound through your portable devices.

Specifications

Body Color: Graphite Gray
Material: Aluminum & Silicone
Analog Inputs: UnBAL 3.5mm | BAL 4.4mm
Headphone Outputs: UnBAL 3.5mm | BAL 4.4mm
Input Max Level: UnBAL 2Vrms | BAL 4Vrms
Output Level

Low Gain: UnBAL 2.1Vrms | BAL 4.2Vrms (No Load)
High Gain: UnBAL 3.1Vrms | BAL 6.2Vrms (No Load)


Dimensions: 2.87" x 5.51" x 0.91"
Weight: 11.46 oz
Charge Port: USB-C
Operating Temp: 32℉~104℉
Frequency Response (Condition: 20Hz~20kHz)

Low Gain: ±0.2dB  UnBAL | ±0.2dB BAL
High Gain: ±0.06dB UnBAL | ±0.06dB BAL


SNR

Low Gain: 111dB @ 1kHz, UnBAL | 115dB @ 1kHz, BAL
High Gain: 114dB @ 1kHz, UnBAL | 117dB @ 1kHz, BAL


THD+N

Low Gain: 0.0045% @1kHz, UnBAL | 0.0015% @1kHz, BAL
High Gain: 0.0027% @1kHz, UnBAL | 0.0013% @1kHz, BAL


Crosstalk

Low + High Gain: -83dB @ 1kHz UnBAL | -110dB @ 1kHz BAL


Output Impedance: 3.5mm (1.1Ω) | 4.4mm (1.3Ω)
Recommended Headphone Impedance: 16~300Ω
Battery Capacity: 4200mAh, 3.8V Li-Polymer
Battery Charge Time: 3 hours (Fast Charge) | 4hours (General Charge)
Playback Time: 12 hours (UnBAL | Input 1Vrms | Low Gain | VOL 30%)


In the Box

A&K PA10 unit
7" AUX 3.5mm audio cable
13" USB-C to C charging cable
(x2) Silicone bands
Instruction Book + Astell&Kern 1 Year Warranty card