Astell&Kern AK380 Copper // High Resolution Music Player w/ 256GB

Astell&Kern AK380 Copper // High Resolution Music Player w/ 256GB

$ 3,999.00 $ 2,999.00

We at Astell&Kern have been relentlessly searching for just the right raw material to complement sound.

Stainless steel has given us unwavering strength
Duralumin, a material used in aircraft, has given us high rigidity and light weight
Aluminum has given us excellent wear resistance

We selected copper as the principal raw material for the newest variant of the AK380 to convey the message that this is more than just a medium for transmitting music – it’s an “instrument”.

Witness the birth of a new instrument—The AK380 Copper

  • Free shipping on all orders.
In Stock
Free 2 Day Air Shipping

When Music Becomes More ThanJust Sound

Copper, as an alloy with tin, nickel, or zinc, is used as a raw material for wind instruments, which form the central part of an orchestra. These wind instruments transmit deep and heavy sounds through tubes of copper alloys.

Sound with a sense of depth
Sound with a sense of weight
Sound with a greater balance

In addition, copper is the second most electrically conductive1 metal after silver. With superior electrical conductivity and shielding performance than typical metals, the AK380 Copper is able to deliver a different sound signature than the existing duralumin-based AK380.

* The copper used in the AK380 Copper boasts a 99.9% pure elemental property.

Astell&Kern AK380 Copper


AK380 Copper is finished in a two-step process using a 5-axis milling machine, and approximately four hours of processing time is required per unit.

Due to the highly-ductile nature of copper, the shavings tend to curl inwards rather than out when creating thread lines, causing the ends of milling tools to become damaged or broken. Because of this finicky nature of copper, the material requires more hands-on labor by an operator compared to other materials such as aluminum.

Uncoated raw copper quickly oxidizes from exposure to outside elements, which makes mass production very difficult to manage.

32-bit 384kHz bit-to-bit Playback

All of the AK380’s circuit design including the digital-analog converter (DAC) are ready for 32-bit processing to handle 32-bit music natively.

Other products have traditionally used sample rate converter (SRC) method down sampling for playback. However, the AK380 is capable of playing back 32-bit, 384 kHz original sound without any down sampling.

The result is the AK380 plays up to 32-bit, 384 kHz, any 24-bit music files, or double layer DSD 5.6MHz natively, without conversion or compression.

PEQ (Parametric EQ)

A parametric equalizer (PEQ*1) was implemented in the AK380 to deliver detailed adjustment of the original sound, and an audio digital signal processor (DSP) was added to aid in this process.

This frees up CPU cycles previously needed for calculating graphic equalizers (GEQ), allowing more detailed and accurate calculations via the dedicated DSP.

The audio DSP expands the existing 10-band, ±0.5 dB graphic equalizer (GEQ*2) to 20-band, ±0.1 dB to more precisely adjust the frequency and gain (dB) as well as more accurately specifying the frequency range via Q value adjustments.

* The PEQ supports up to 8 kHz – 192 kHz (8/16/24-bit) formats, but DSD and 32-bit audio are not supported.

AK Connect App

Astell&Kern has further enhanced DLNA functionality via the AK Connect app.

Wireless networking DLNA (version 1.0) connects to a NAS or PC, and is easily controlled with a smartphone or tablet through AK Connect.

Source files on a PC or NAS can be freely transferred and streamed without the hassle of turning on the computer and physically connecting with a cable.

If on the same access point (AP) network, music files on a PC or NAS can be played back via DLNA.

Pressure-sensitive Metal Capacitive Touch

The AK380 is the first Astell&Kern product to utilize a metal capacitive touch interface. The pressure-sensitive Metal Touch home button responds to fine pressure changes so users operate the device with just a light touch on the metallic pad.


  • Body Color / Copper
  • Body Material / Copper
  • Display /4inch WVGA (480 x 800) Touchscreen
  • Supported Audio Formats / WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
  • Sample rate / PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample) / DSD Native: DSD64(1bit 2.8MHz), Stereo/
  • DSD128(1bit 5.6MHz), Stereo
  • Output Level / Unbalance 2.2Vrms / Balance 2.3Vrms (Condition No Load)
  • DAC / AKM AK4490 x2 (Dual DAC)
  • Decoding / Support up to 32bit / 384kHz Bit to Bit Decoding
  • Input / USB Micro-B input (for charging & data transfer (PC & MAC)) / Connection Mode : MTP (Media Device)
  • Outputs / PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
  • Wi-Fi / 802.11 b/g/n (2.4GHz)
  • Bluetooth / V4.0 (A2DP, AVRCP)
  • Dimensions / 3.14 ”(79.8 mm) [W] x 4.42 ”(112.4 mm) [H] x 0.70 ”(17.9 mm) [D]
  • Weight / 12.35 oz (350 g)
  • Feature Enhancements / Firmware upgrades supported (OTA)

Audio Performance

Frequency Response / ±0.053dB (Condition: 20Hz~20kHz) Unbalance & Balance | ±0.56dB (Condition: 10Hz~70kHz) Unbalance / ±0.55dB (Condition: 10Hz~70kHz) Balance
Signal to Noise Ratio / 116dB @ 1kHz, Unbalance / 117dB @ 1kHz, Balance
Crosstalk / 130dB @ 1kHz, Unbalance / 135dB @ 1kHz, Balance
THD+N / 0.0008% @ 1kHz, Unbalance / 0.0007% @ 1kHz, Balance
IMD SMPTE / 0.0007% 800Hz 10kHz(4:1) Unbalance / 0.0006% 800Hz 10kHz(4:1) Balance
Output Impedance / Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)

Clock Source

Clock Jitter / 30ps(Typ)
Reference Clock Jitter / 200 Femto Seconds


Capacity / 3,400mAh 3.7V Li-Polymer Battery


Built-in Memory / 256GB [NAND]
External Memory / microSD (Max 128GB) x1


Supported OS / Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up


There are no reviews yet.

Be the first to review “Astell&Kern AK380 Copper // High Resolution Music Player w/ 256GB”

Your email address will not be published. Required fields are marked *