Astell&Kern AK120 // Digital Music Player 64GB // Demo

$ 1,299.00 $ 699.00

Astell&Kern AK120 // Digital Music Player 64GB // Demo

$ 1,299.00 $ 699.00

Mastering Quality Sound (MQS) is an acronym of collective lossless & high-resolution audio source formats, typically in 24-bit/44 to 192kHz of bit/sampling rates. Because MQS delivers about 6.5 times more detail than a conventional CD format (16bit/44.1kHz), listeners can enjoy a better and a more realistic sound quality.

24-bit/44 to 192kHz is the music industry norm used in the mastering process during sound production. However, the result of high resolution music files has to be compressed down to 16bit/44.1kHz so it can be stored into a single CD due to the memory storage shortcomings (~700MB). To produce the MP3 format, the high-resolution audio is compressed even further to 128 to 320kbps for the convenience of file size. These compressions remove the enormous amount of the details of the original recording because of memory storage limitations and listeners will never be able to hear the details.

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SKU: AK120
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Source frequency analysis comparison

When comparing the frequency of each digital audio format, data loss is even more visible. MP3 formats can only reproduce frequencies up to 16kHz. However, WAV formats sampled in 48kHz can be reproduced up to 22kHz and higher. Frequency rates of MQS files sampled in 44 to 192kHz can be reproduced even further than the WAV format.

DSD Playback support

High-Definition Digital Audio Formats and DSD Playback support with the AK120.

DSD(Direct Stream Digital) is the digital audio format found embedded into SACD(Super Audio CD) physical media.
In common digital audio recording, PCM(Pulse Code Modulation) is the Y-axis of a sine wave is divided into 65000 (16bit) to 1,670 million(24bit) and the X-axis is divided into 44,000(44.1kHz) to 192,000(192kHz) parts. When comparing a standard PCM digital recording to the DSD approach, the digital signal is transformed by Y-axis of the DSD sine waves that are measured at single bit(1bit, 0s and 1s) sequence and is divided 2.8 million(2.8MHz) to 5.6 million(5.6MHz) times into the X-axis.

In general, when comparing SACD and PCM 16bit/44.1kHz Audio CDs, SACDs are recorded in frequency ranges up to 100kHz and greatly expand the dynamic range over 120dB while maintaining clarity of sound that a traditional PCM audio signal cannot reproduce. In order to listen to SACD, a dedicated SACD player is needed, but the AK120 brings SACD audio format playback to a portable player with DSD audio support. Enjoy the sound of DSD without a separate SACD player with the AK120. (AK120 supports the .dff and .dsf DSD formats up to 2.8MHz resolution.)

Equipped with the Wolfson 8740 DAC

AK120 DAC & Amp Creates a Dual Mono System that separates Left & Right Audio Channels
From input to output, the design of the dual Wolfson WM8740 DAC implemented in the Astell&Kern AK120 independently separates the left and right audio channels, creating a true Dual-Mono audio output system.

When the analog audio signal passes through the dual Wolfson WM8740 DAC, not only does the AK120 use the Ultralow Distortion and Noise Technology, but executes the optimal digital noise reduction technology combined into the analog amp. The dual DAC built-in to the AK120 forms a dual-monaural audio ecosystem that brings wider soundstage, channel separation, and an overall richer sound.

External DAC Support

Use the AK120 as an external DAC through the USB port.

With the Astell&Kern AK120, the Wolfson WM8740 chips can also be used as an external DAC through the USB terminal.
Enjoy more lively sound from the music files stored through a variety of sources, including computers and car audio systems.
The optical IN port of the AK120 can also be used as an external DAC.

Specifications

General Specs
Display2.4inch QVGA (320 x 240) IPS Touchscreen
Supported Audio FormatsWAV, AIFF, FLAC, ALAC, APE, MP3, AAC, WMA, OGG, DSD
Sample rateWAV, AIFF, FLAC, ALAC : 8kHz ~ 192kHz (8/16/24-bits per sample)
Output LevelL: 1.5Vrms + R: 1.5Vrms (Condition No Load)
DACWolfson WM8740 24-bit DAC (High-End Audio DAC) x2
DecodingSupports up to 24-bit / 192kHz Bit to Bit Decoding
Charging InterfaceMicro USB Type-B
InterfaceUSB 2.0, OPTICAL IN/OUT, Headphone Out
Dimensions2.33 ”(59.2 mm) [W] x 3.50 ”(89 mm) [H] x 0.57 ”(14.4 mm) [D]
Weight5 oz (143 g)
Feature EnhancementsFirmware upgrades supported
Audio Performance
Frequency Response±0.02dB (Condition: 20Hz~20kHz) / ±0.2dB (Condition: 10Hz~70kHz)
Signal to Noise Ratio113dB (1kHz 0dB, 24-bit 48kHz, No Load)
Crosstalk-128dB (1kHz 0dB, 24-bit 48kHz, No Load)
THD+N0.0008% (1kHz 0dB, 24bit 48kHz, No Load)
IMD SMPTE0.0005% (24-bit 48kHz, No Load) 800Hz 10kHz (4:1)
Output Impedance3 ohm
Clock Source
Clock Jitter50ps (Typ)
Battery
Capacity2,350mAh 3.7V Li-Polymer Battery
Continuous Playback TimeUp to 14 hours (Standard – MUSIC: FLAC, 16-bit, 44kHz, Volume 37, EQ Off, LCD Off)
Charge TimeAbout 6.5 Hours
Memory
Built-in MemoryAK120 : 64GB [NAND]
External MemorymicroSD (Max 64GB) x2
OS
Supported OSWindows XP, Windows Vista,7,8 (32/64bit), MAC OS X 10.6.5 and up

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