Astell & Kern JR Sleek Silver 64GB

With the Astell & Kern JR, you can listen to high-resolution audio anytime, anywhere. Its top-of-the-line hardware, such as the Wolfson WM8740 converter, delivers the highest sound quality while its compact design makes it easy to fit comfortably in your pocket. Because Astell & Kern's engineers have reduced JR's output impedance to only 2 Ohms, its sound fidelity is now flawless. It's like carrying a small concert in your pocket.

Key Features

• Portable high-fidelity audio player
• Support for FLAC lossless compression with a resolution of 24 bit / 192 kHz and 2.8 MHz DSD
• Uses a top-of-the-line converter - the Wolfson WM8740
• Improved compatibility with a wider range of headphones thanks to the higher output level and lower output impedance
• Bluetooth wireless connectivity
• Can be used as an external sound card to a desktop computer (USB DAC)
• A touchscreen for easy operation
• Thin, solid body made of aluminium

Top audio quality

Astell & Kern JR comes with 64 gigabytes of internal memory which can be enhanced by a micro SD card of up to 64GB. With a possible overall capacity of 128 gigabytes, the JR can store around 1,250 songs in top audio quality. The player can also function as an external sound card when connected to a PC or Mac via USB.

Road-ready

The JR's aluminium body with a textured surface protects the player without adding excess weight. Its slim profile and great ergonomics enable easy one-handed operation. The touch screen provides a very intuitive way to control the player and displays all the relevant information on playback and settings.

Specifications:

Compatibility:
Supported formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, DSD
Sampling frequency FLAC, WAV, ALAC, AIFF: 8-192 kHz (8/16/24 bits / sample)
Sampling frequency DSD: DSD64 (1 bit 2.8MHz), Stereo (DSD to PCM)
Sampling frequency MP3, WAV: 8 - 320 kbit / s
Supported APE compression level: normal, fast, high
Decoding: "Bit to Bit" with support for up to 24 bit / 192 kHz

Playback:
Frequency response: ± 0.04 dB (in the range of 20 Hz - 20 kHz) and ± 0.3 dB (in the range of 10 Hz - 70 kHz)
Signal to Noise Ratio 112 dB @ 1 kHz
Crosstalk: 120 dB @ 1 kHz
THD+N: 0.005% @ 1 kHz
Output level of 1.95 Vrms (no load)
Output impedance 2 Ohms

Supported Bluetooth profiles:
A2DP

Memory:
Internal memory: 64 GB
External Memory: 1 x Micro SD slot (Max. 64 GB Micro SD)

Battery:
Type: 1450 mAh 3.7 V Lithium-Polymer
Approximate charging time: 4 hours

Supported operating systems:
Windows XP / 7/ 8 (32 / 64bit)
MAC OS X 10.7 or higher