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Astell & Kern AK380SS Digital Music & Media Player Package

ak380ss

Astell & Kern

Moon Audio

Hot New Products,Players,Astell&Kern,Music Players,Bundles,Brands,Portable,Los Angeles Audio Show 2017,

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NEW  This limited edition Astell & Kern AK380SS Package includes an AK380 Stainless Steel Player, a Stainless Steel Amp and a Van Nuys case to hold both units. All units sold exclusively as a pre-packaged bundle.


The AK AK380SS Music Player Package is geared for the pro sound engineer, audiophiles & enthusiasts demanding the very best sound headphones for mobile listening via headphones.

Regular Price: $4,999.00

Now only: $4,499.00

Description

Details

This limited edition Astell & Kern AK380SS Package includes an AK380 Stainless Steel Player, a Stainless Steel Amp and a Van Nuys case to hold both units. All units sold exclusively as a pre-packaged bundle.

The AK AK380SS Music Player Package is geared for the pro sound engineer, audiophiles & enthusiasts demanding the very best sound headphones for mobile listening via headphones.

Main Features include:

  • 32bit/384kHz Bit to Bit Playback
  • Native DSD Playback
  • 20Band EQ/0.1dB steps
  • VCXO Reference Clock(200 Femto Seconds)
  • Extendible Docking connector
  • AK Connect App
  • Metal-touch sensor Home button 

AK380SS

General Specifications

Model   AK380SS
Body Color    Stainless Steel
Body Material   Stainless Steel
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 (8/16/24/32bits per Sample) / DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), 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, aptX™ HD)
Dimensions    3.14 " (79.8 mm) [W] x 4.42 "(112.4 mm) [H] x 0.70 "(17.9 mm) [D]
Weight    11.99 oz (340 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

 

Battery

Capacity   3,400mAh 3.7V Li-Polymer Battery

 

Memory

Built-in Memory   256GB [NAND]
External Memory    microSD (Max 138GB) x1

 

OS

Supported OS   Windows XP, Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up

 


AMP SS

General Specifications

Model   AMP SS
Body Color    Stainless Steel
Body Material    Stainless Steel
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 (Chargning & 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    9.73 oz (276 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

AK380

Evolved to Serve Pro-Audio

Astell&Kern has stayed on the course, offering the truest and most natural sound possible. In order to become a device that professionals want, Astell & Kern decided to make a bold move and restart all processes from the beginning. The new AK380 offers the most authentic sound from any digital music format with enhanced features that are sought-after by Pro-Audio.

Every bit of the AK380 was designed for Pro-Audio in mind. The sound that Pro-Audio people have been looking for starts with the AK380.

32-bit 384kHz bit-to-bit Playback

The circuit design of the AK380 including the DAC can handle 32-bit music natively & is ready for all 32-bit processing.  Bring it on! Other products have traditionally used sample rate converter (SRC) method down sampling for playback, but the AK380 is capable of playing back 32-bit, 384 kHz original sound without any down sampling.

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

PEQ (Parametric EQ)

A parametric equalizer (PEQ*1) was added to 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.

The AK380's PEQ Playback Using Audio DSP

Image ak380 Playback

The other Products GEQ Playback Using Audio DSP

Image Playback other products

AK380 20-band PEQ and AK240 10-band GEQ Frequency Values

Image AK380 & AK240 GEQ Frequency values

What is Parametric Equalization (PEQ*1)?

Parametric equalization refers to the ability to increase or decrease the volume within the Q value range. A Q value is a frequency range relative to a selected frequency.

The frequency range decreases when the Q value increases and vice versa.

Image Parametric Equalization

What is Graphic Equalization (GEQ*2)?

Graphic equalization divides the audible frequency register into several registers and increases or decreases the level of each register with a volume slider to adjust the respective frequency's characteristics. The switches of the volume slider are connected like a graph to visually determine the frequency characteristics, hence the name "graphic equalizer."

Image Graphic Equalization

Equipped With a Femto Clock to Deliver True Original Sound

Astell&Kern implemented a voltage-controlled crystal oscillator (VCXO) high-precision clock with a reference jitter value of 200 femto seconds*3.
Femto clocks are commonly used in high-end audio systems, and the clock is measured in high-precision femtosecond units (one quadrillionth of a second).

What is VCXO?

A VCXO, or a voltage-controlled crystal oscillator, is a type of crystal oscillation device that creates oscillation frequencies. External environmental stimuli, which in this case mean voltage inputs, influence the frequency value. Adjustments to the voltage input tunes a precise frequency value.

What is Jitter?

Jitter refers to the undesired deviation in time that occurs in a periodic signal. In this case, jitter is the error that occurs in the reference clock required to perform the sampling in digital audio equipment.

By utilizing a femto clock, the AK380 is able to create a more accurate frequency value and make fine jitter corrections. As a result, the AK380 faithfully reproduces analog sound closer than ever to the original source when transmitting a digital signal as an analog signal.

Image What is Jitter

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.

Image AK Connect App

DMP (Digital Media Player)

Finds a list of content on a media server for selection and playback.

DMC (Digital Media Controller)

Finds a list of content on a media server and establishes a connection to a playback-capable device (renderer). By default, a DMC establishes a connection between a media server and media renderer and controls content playback-related operations.

DMS (Digital Media Server = Network Server)

Actually stores the media content to be shared. When connected to a network, the DMS transmits/distributes the media content for other devices to stream or download.

DMR (Digital Media Renderer = Network Player)

Connects to a media server via media controller for content playback.

Image AK Connect App

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.

AK380SS Pressure Touch

More Expandable Options with the AK380

The AK380 offers great expandable options through its micro USB connection and balanced out ports on the bottom of the unit. Its functionality is expandable by connecting to a variety of devices.

You can increase the output and connect to a greater variety of high-impedance professional headphones through the NEW AK380 Amp.

The AK380 Cradle features balanced output in addition to USB data transfer and charging capabilities, and the AK380 CD-ROM drive rips audio CDs directly to the AK380.

Image AK380 Upgrade Options

Design Concept

The light and the object are the main theme of the AK380 design. Any shadow of an object portraits the exact shape from the perspective of the light at that moment. The way of reproducing the true sound of music from digital formats is quite similar. Nothing more or nothing less. The design motif of the AK380 reflects our philosophy of music and sound.

The AK380’s design was inspired by “light” and “shadow”.

While the design of the AK240 captured as a moment in time of light and shadow, the AK380 is designed to express the change of time with more angles on its body. You will notice the different angles of surface design as you view the AK380.

We believe that the beauty of the design shall reflect what the AK380 can do with music. As different angles of light casts different shadows, different music will give you a variety of emotions.

HiFi+ Review by Chris Martens - Sept. 2015

AK380 Instruction Manual

Q&A

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