Astell&Kern AK Jr Portable High Definition Music Player Junior
USD $319.00
In stock
12 Months
14 Days
Money Back
The AK Jr Portable High Definition Music Player and DAC from Astell & Kern is a pocket-sized audio system capable of studio Mastering Quality Sound (MQS) support and playback. MQS is a high definition digital music format operating at 24 bits and sample rates from 96 to 192 kHz, which translates to distortion-free sound without data loss. MQS sources are commonly saved as a lossless 24-bit WAV or FLAC files during record production at the time of the mastering source. The AK Jr also supports 2.8 MHz DSD64 playback by converting to PCM.

  • Bit-to-Bit Mastering Quality Sound (MQS)
  • Wolfson WM8740 x1 (Single DAC)
  • 2.8 MHz DSD Support
  • Bluetooth Compatible
  • 3.1" WQVGA (240 x 400) Touchscreen
  • 64GB Internal Flash Memory
  • 64GB microSD Card Slot
  • 10-Band EQ
  • Integrated Volume Wheel
  • Brushed Aluminum Body
In The Box
  1. Astell&Kern AK Jr Portable High Definition Music Player Junior (Red)
Audio Performance
Frequency Response±0.04 dB (Condition: 20 Hz to 20 kHz) / ±0.3 dB (Condition: 20 Hz to 70 kHz)
Signal to Noise Ratio112 dB @ 1 kHz
Crosstalk120 dB @ 1 kHz
THD + N0.005% @ 1 kHz
IMD SMPTE0.0006% 800 Hz to 10 kHz(4:1)
Output Impedance2 ohms
General Specifications
Display3.1" WQVGA (240 x 400) touchscreen
Supported Audio FormatsWAV, FLAC, WMA, MP3, OGG, APE (Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
Sample RateFLAC, WAV, ALAC, AIFF: 8 to 192 kHz (8/16/24 bits per sample)
DSD64: 1bit 2.8 MHz Stereo (DSD to PCM)
Output Level1.95 Vrms
DAC1 x Wolfson WM8740 x1 (single DAC)
DecodingSupport up to 24 bit/192 kHz (bit to bit decoding)
InputUSB Micro-B Input: For charging & data transfer (PC & Mac)
Connection Mode: UMS(USB Mass Storage)
OutputsPhones: 3.5 mm
Clock SourcesClock Jitter: 50 ps (Typical)
Battery1,450 mAh 3.7 V Li-Polymer Battery
MemoryBuilt-in Memory: 64 GB NAND
External Memory: 1 x microSD (Max 64 GB)
Supported Operating SystemWindows XP, Windows 7,8 (32/64 bit)
Mac OS X 10.7 and up
Body MaterialAluminum
Dimensions (WxHxD)2.1 x 4.6 x 0.4" / 5.3 x 11.7 x 0.9 cm
Weight3.3 oz / 93.0 g