Astell & Kern AK Jr Ultra Slim 64GB Hi-Res Audio Player (Silver)

Discontinued

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AK JR
821566015082
DISCONTINUED

Description
Specifications

Although some of the first Astell&Kern players were a portable device, its relatively large size made it less convenient for some. The AK Jr’s compact design delivers the highest sound quality while fitting comfortably in your pocket.

Carrying a small concert in the palm of your hands with the AK Jr!

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 Ratio	112 dB @ 1 kHz
Crosstalk	120 dB @ 1 kHz
THD + N	0.005% @ 1 kHz
IMD SMPTE	0.0006% 800 Hz to 10 kHz(4:1)
Output Impedance	2 ohms
GENERAL SPECIFICATIONS
Display	3.1" WQVGA (240 x 400) touchscreen
Supported Audio Formats	WAV, FLAC, WMA, MP3, OGG, APE (Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
Sample Rate	FLAC, WAV, ALAC, AIFF: 8 to 192 kHz (8/16/24 bits per sample) DSD64: 1bit 2.8 MHz Stereo (DSD to PCM)
Output Level	1.95 Vrms
DAC	1 x Wolfson WM8740 x1 (single DAC)
Decoding	Support up to 24 bit/192 kHz (bit to bit decoding)
Input	USB Micro-B Input: For charging & data transfer (PC & Mac) Connection Mode: UMS(USB Mass Storage)
Outputs	Phones: 3.5 mm
Bluetooth	V4.0
Clock Sources	Clock Jitter: 50 ps (Typical)
Battery	1,450 mAh 3.7 V Li-Polymer Battery
Memory	Built-in Memory: 64 GB NAND External Memory: 1 x microSD (Max 256 GB)
Supported Operating System	Windows XP, Windows 7,8 (32/64 bit) Mac OS X 10.7 and up
Body Material	Aluminum
Dimensions (WxHxD)	2.1 x 4.6 x 0.4" / 5.3 x 11.7 x 0.9 cm
Weight	3.3 oz / 93.0 g