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Astell and Kern AK100 Open Box Portable 32GB Mastering Quality Sound Audio Player

Astell and Kern  AK100  Open Box Portable 32GB Mastering Quality Sound Audio Player

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Top Features
  • Enjoy 6.5x more detail than a conventional CD.
  • 32GB Built–in storage, expandable up to 96GB.
  • Woflson Audio WM8740 24–bit/192kHz Stereo DAC.
  • Sensitive analog feel of the volume wheel.

SKU# 120972


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What's in the box
  • AK100
  • Carrying Pouch
  • Micro USB Cable
  • Quick Start Guide
  • Warranty Information
What is Open Box?

Open Box items are products that have been returned to us by customers or were on display in our retail store. In most cases these items are in as-new condition. Although occasionally they may have had a minor defect repaired, these items are fully operational to manufacturer specifications. Open Box items include all supplied accessories and carry the full **manufacturer's warranty.

** Excludes Definitive Technology, Monster, Beats by Dr. Dre, Klipsch and Onkyo products.
Availability is limited to stock on hand.
Open Box items are sold on a first-come first-served basis.

Astell and Kern AK100 Open Box Portable 32GB Mastering Quality Sound Audio Player

The Ultimate Portable High–fidelity Audio System 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.

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.

The AK100 supersedes the key performance criteria of Hi–Fi audio.
AK100 MQS system is a true portable Hi–Fi source, that even outperforms to other Hi–Fi audio components compared. THD + N : 0.0009%Crosstalk : –120dBJitter : 90psSNR : 110dBFR : +0.02 ~ –0.02 THD+N (1kHz 0dB, No load)

THD + Noise (Distortion) over the THD + Noise signal rate, less distortion is heard. The AK100 achieves a 0.0009% distortion signal rate. Signal to Noise Ratio (1kHz 0dB, No load)

(Signal to Noise Ratio) As the signal–to–noise ratio increases, the clearer the sound becomes. AK100 signal–to–noise specification is 110dB. Crosstalk (1kHz 0dB, No load)

The higher the number in the crosstalk specification, the higher the isolation in the Left/Right channels develops. The AK100 has a crosstalk specification of –120dB. Frequency Response (1kHz 0dB, No load)

Frequency Response
Jitter With smaller figures representing irregular tremors of the signal waveform, the better the device performs. The AK100 has a Jitter specification of 90ps.

One of the world’s highest performing 24–bit/192kHz stereo DAC
AK100 is the world’s first portable digital audio device equipped with the Wolfson WM8740 DAC. Users familiar with LINN, ARCAM, and other high–end audio equipment (AV Receivers) actually have been listening to the Wolfson WM8740 high–performance 24–bit/192kHz Stereo DAC at home. With the Wolfson WM8740 DAC, the AK100 achieves highest level of signal–to–noise ratio (SNR) and the lowest level of the total harmonic distortion (THD) performance. And with the WM8740 DAC, the signal to noise ratio of 110dB found in the AK100 significantly improves sound quality.

The AK100 can be used in combination or as a standalone external DAC.
Leverage the Wolfson WM8740 DAC with the optical–in feature of the Astell&Kern and use it as an external DAC, Connect the Astell&Kern to an optical–out port of your computer or a CD player using a TOSLINK optical cable and plug it to the optical–in of the Astell&Kern. The digital music files will be converted by the Wolfson WM8740 DAC and enjoy a further improvement of your music listening experience.

The AK100 is equipped with dual microSD card slots and supports up to 96GB of storage space.
To playback large MQS music tracks, it is essential to have large enough storage space in the AK100. With 32GB of built–in internal memory and the dual 32GB high–speed microSD card slots, a total of 96GB of music files can be saved on the AK100.

4 generations of MQS Albums supported on microSD cards
The additional memory card slot holds an important point. 24–bit album recordings will soon be released with music files stored in microSD memory cards. For a mainstream album, LP (vinyl) records would be considered as first generation, second generations are cassette tapes, and Compact Discs (CDs) is the third and current generation. Fourth generation albums are considered as MQS albums that are released in high capacity microSD memory cards. Comfortably enjoy two albums at once through the dual memory card slots of the Astell&Kern. * The Astell&Kern supports MQS high–resolution music stored on microSD cards.

A Practical EQ Determines the Change in Frequency Response
With the Astell&Kern and a nice set of headphones, audio enthusiasts will appreciate even more various genres of music. Use the touch interface of the built–in 5–band equalizer to delicately find the tone you desire. In addition, touch the screen to finely adjust the value of each band.

The AK100 presents an intuitive interface experience through a combination of touchscreen and control buttons.
The control buttons and touch screen of the AK100 ensures fast and efficient operation. The synchronization of the 4–way user interface, 2.4inch (6.09cm) touchscreen, volume control wheel, and control buttons creates an easy to use experience. The interface of the AK100 is designed for a quick search and instant listening of MQS music.

A brushed aluminum body with superior craftsmanship
The brushed aluminum pores finish represents a deep and refined craftsmanship not traditionally found in a combination. More solid and refined design impression of the AK100. The design of the volume wheel protector resembles the bridge of a stringed instrument and hints at the more enriched sound from the AK100. Luxurious details are not missed at all with the AK100. The red ring wrapped around the volume wheel is a design statement of the Astell&Kern identity and the fine craftsmanship of all metal components reassures the long lasting quality of the Astell&Kern.

The sensitive analog feel of the volume wheel
The Astell&Kern is a digital device with an analog ambiance. The volume wheel also provides analog musical inspirations that are not often found on typical push–button volume controls.

Q & A
Features & Specs

Additional Information

Product ID 120972
UPC 100924
Brand Astell and Kern
SKU 120972
Manufacturers Part Number AK100 Open Box
Detailed Specifications General Specifications
  • Display 2.4inch QVGA (320 x 240) IPS Touchscreen
  • Supported Audio Formats WAV, AIFF, FLAC, ALAC, APE, MP3, AAC, WMA, OGG
  • Sample rate WAV, AIFF, FLAC, ALAC : 8kHz ~ 192kHz (8/16/24–bits per sample)
  • Output Level 1.5Vrms (No Load)
  • DAC Wolfson WM8740 24–bit DAC (High–End Audio DAC)
  • Decoding Supports up to 24–bit / 192kHz Bit to Bit Decoding
  • Charging Interface Micro USB Type–B
  • Interface USB 2.0, OPTICAL IN/OUT, Headphone Out
  • Dimensions 2.33 "(59.2 mm) [W] x 3.11 "(79 mm) [H] x 0.57 "(14.4 mm) [D]
  • Weight 4.3 oz (122 g)
  • Feature Enhancements Firmware upgrades supported
  • Audio Performance
  • Frequency Response 10Hz to 20kHz +/–0.02dB (24bit 48kHz, No Load)
  • Signal to Noise Ratio 110dB (1kHz 0dB, 24bit 48kHz, No Load)
  • Crosstalk –120dB (1kHz 0dB, 24bit 48kHz, No Load)
  • THD+N 0.0009% (1kHz 0dB, 24bit 48kHz, No Load)
  • IMD SMPTE 0.003% (24bit 48kHz, No Load)
  • Output Impedance 20 ohm
  • Clock source
  • Clock Jitter 90ps

  • Battery
  • Capacity 2,000mAh 3.7V Li–Polymer Battery
  • Continuous Playback Time Up to 16 hours (Standard – MUSIC: FLAC, 16–bit, 44kHz, Volume 37, EQ Off, LCD Off)
  • Charge Time About 5 hours

  • Memory
  • Built–in Memory 32GB [NAND]
  • External Memory microSD (Max 32GB) x2

  • OS
  • Supported OS Windows XP, Windows Vista,7,8 (32/64bit), MAC OS X 10.6.5 and up
  • Manufacturer Warranty 1 Year Limited Warranty
    Product Weight 0.26
    Color Black
    Width (inches) 2.33

    Astell and Kern Warranty Included:

    1 Year Limited Warranty