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Astell & Kern AK380 Amp

AK380_amp

Astell & Kern

Moon Audio

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The AK Amp is the first accessory to specifically complement the AK380 and AK320 Media Players.


The AK Amp supports high-impedance headphones and high-gain output while remaining faithful to the original sound.

$699.00

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Description

Details

The AK Amp is the first accessory to specifically complement the AK380 and AK320 Media Players.

The AK Amp supports high-impedance headphones and high-gain output while remaining faithful to the original sound.

Main Features:

  • Expansion-type amplifier with design unity
  • 3,400 mAh large-capacity battery
  • Supports up to nine hours of continuous unbalanced-output playback
  • 8.1 VRMS high-gain balanced output
  • 4.1 VRMS unbalanced output
  • Convenient Portability

High Gain

The AK380 Amp supports 8.1 VRMS output when connected via high-gain balanced output. 

Low Gain

Unbalance 2.1 Vrms / Balance 2.1 Vrms (Condition No Load)

High Gain

Unbalance 4.1 Vrms / Balance 8.1 Vrms (Condition No Load)

High-gain output is four times greater than low-gain output and supports high-impedance headphones.

To protect earphones and headphones during high output, the volume is automatically adjusted when the amp is powered on or the earphones or headphones are disconnected.

Furthermore, the gain can be easily adjusted via the AK380's settings.

When the AK380 Amp is connected, USB DAC and optical out functionalities through the amplifier are disabled.

Amp powered on

Y

Earphones/headphones disconnected

Y

Gain changed

Y

Audio Block

AK380 Amp Audio Block

3,400 mAh Large-capacity Battery

In general, amplifiers with increased audio output consume a greater amount of energy.

For this reason, the AK380 Amp  features a 3,400 mAh large-capacity battery – identical to the one in the AK380 itself - to support up to nine hours of continuous unbalanced-output playback.

AK380 Amp vs. Other amps

One of the main features of the AK380 Amp is its convenient portability.Astell & Kern addresses many points of discomfort in conventional amplifiers and implements an integrated design for greater convenience in the AK380 Amp.

 

AK380 Amp

Other Amps

Charging

AK380 + AK380 AMP simultaneous charging.

Separate charging of device and amp.
Connections

Separate cable not required due to integrated design.

Separate cable for connecting device and amp.
 

Easy connection using a Screw Cap.

Device and amp connection via separate band.

Volume Control

Integrated volume control using the AK380.

Separate volume controls for device and amp.

Integrated Design

The AK380 Ammp is designed as an extension of the light and shadow theme of the AK380 Media Player.

Like the AK380 medial player, the AK380 Amp retains subtle changes and details in the emitted brilliance as light flows across its surface.

The diamond pattern engraved into the volume wheel of AK380 is repeated on the amplifier's rear light for design continuity.

The area of the amplifier in contact with the AK380's volume wheel reproduces the design's angle of reflection for comfortable wheel operation. The amplifier's light shining delicately through the gaps in the reflected surface visually accentuate the music’s mystique.

Unlike conventional amplifiers, the AK380 Amp was designed from the ground up as a single entity when combined with the AK380.

The wheel on the rear of the amplifier that connects the two devices is a representation of the volume wheel seen throughout Astell&Kern products and expresses Astell & Kern's unique design identity.

Q&A

Questions & Answers
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Most Recent Questions
Q:
Do you have a lightning to usb micro cable for my iPhone 6 Plus to Shure SHA900?
1 answers
Q:
Hi - Is there a right or wrong when attaching the cable to the IEMs? Left and right are defined by the color of the dots, but do these dots need to be at the top or bottom? Regards, J
1 answers

Features

Additional Info

Specifications

General Specifications  
Model

AK380 AMP

Body Color

Meteoric Titan

Body Material

Aluminum

Output Level

[Low Gain] Unbalanced 2.1 VRMS / Balanced 2.1 VRMS (Condition: No Load)

[High Gain] Unbalanced 4.1 VRMS / Balanced 8.1 VRMS (Condition: No Load)

Input

Type-B micro-USB Input (Charging & data transfer (PC & Mac))

/ Connection Mode: MTP (Media Device)

Outputs

PHONES (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)

Dimensions

3.17 ”(80.7 mm) [W] x 5.01 ”(128.4 mm) [H] x 0.40 ”(10.3 mm) [D]

Weight

5.82 oz (165 g)

   
Audio Performance  
Frequency Response

[Low Gain] ±0.06 dB (Condition: 20 Hz – 20 kHz) Unbalanced / ±0.06 dB (Condition: 20 Hz – 20 kHz) Balanced

[High Gain] ±0.03 dB (Condition: 20 Hz – 20 kHz) Unbalanced / ±0.03 dB (Condition: 20 Hz – 20 kHz) Balanced

Signal to Noise Ratio

[Low Gain] 110 dB @ 1 kHz, Unbalanced / 110 dB @ 1 kHz, Balanced

[High Gain] 113 dB @ 1 kHz, Unbalanced / 114 dB @ 1 kHz, Balanced

Crosstalk

[Low Gain] 108 dB @ 1 kHz, Unbalanced / 130 dB @ 1 kHz, Balanced

[High Gain] 108 dB @ 1 kHz, Unbalanced / 128 dB @ 1 kHz, Balanced

 



Reviews

Perfect Sound Straight out of the Box!Review by Michael
Price
Value
Quality
I made this purchase to not only drive more power into my Oppo PM-1 with my silver Dragon V3 Headphone Cable from Moon-Audio.

But it gave me a much improvement in SQ A Wider Soundstage & 3D like Sound! It looks as great as it sounds.

Shipping was Fast as well!

Thanks to Drew & His Crew!

Well Worth the Money if you have the AK380 Alone. A must Buy! (Posted on 2/1/2016)
Excellence taken higherReview by Carl 99
Price
Value
Quality
One buys a headphone amplifier, in general, not so much to increase the sound level, but mostly to experience improved audio quality.

When one speaks of the AK 380, a highly expensive DAP that already boasts audio quality nonpareil (and that is always a subjective factor) one wonders how much better "great" can get.

And so it was with this device, made attractive partly by my curiosity when it appeared, to see how much better this DAP would sound. What I was hoping for was the ability to see into the soundstage (of course, figuratively) as well as the ability to hear every string on the violin, every tremor of decay from the horns, and the subtle shadings of the human voice as it delivers the emotion of the lyrical content.
And my expectations have been fulfilled. As much as the 380 is an expensive prize for those with almost unlimited discretionary income, it is also a reward for the patience an audiophile shows in seeking the nirvana of audio subtlety and shadings in the never ending quest of "the next best thing."

I am, in a few words, heartily satisfied, and while I recognize that all would not agree with my evaluation because of the subjectives involved, I can only recommend the ultimate test: that of listening for yourself and letting your ears (and maybe your heart) make the final determination.
Expensive toys, to be sure, but at least requiring a listen, if only for the experience.

Heartily recommended. And I have to thank Drew for getting it to me so quickly (though of course I did pay for expedited shipping). (Posted on 10/4/2015)

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