AK-240 - Mp3 player Astell&Kern - Free user manual and instructions
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| Product Type | Digital Audio Player (DAP) |
| Brand | Astell&Kern |
| Model | AK-240 |
| Dimensions | 66 mm x 117 mm x 17.5 mm |
| Weight | 190 g |
| Battery Type | Lithium-ion Polymer |
| Battery Capacity | 3250 mAh |
| Internal Memory | 64 GB |
| Expandable Storage | microSD (up to 64 GB) |
| Display | 3.31-inch AMOLED touchscreen (480x800) |
| Supported Audio Formats | WAV, FLAC, ALAC, AIFF, WMA, MP3, DSD (DFF, DSF), SACD ISO |
| Max PCM Sampling Rate | 32-bit / 384 kHz (native) |
| DSD Support | DSD64, DSD128 (native) |
| DAC | Dual CS4398 chipset |
| Outputs | 3.5mm unbalanced, 2.5mm balanced, optical/coaxial digital out |
| Wi-Fi | IEEE 802.11 b/g/n (2.4 GHz) |
| Bluetooth | Bluetooth 4.0 (A2DP, AVRCP, aptX) |
| Operating System | Customized Linux-based GUI |
| Charging Port | Micro USB 2.0 (with charging) |
| Cleaning Instructions | Wipe with a soft, dry cloth. Avoid liquids. |
| Safety Precautions | Do not expose to high temperatures or moisture. Use only authorized accessories. |
| Service & Repair | Contact Astell&Kern support or authorized service centers. |
| Firmware Updates | Via computer or over-the-air (once connected to Wi-Fi) |
Frequently Asked Questions - AK-240 Astell&Kern
How do I transfer music to my AK-240?
Connect the AK-240 to your computer via USB and use a file manager to drag and drop music files into the internal memory or microSD card. The device will appear as an external drive.
What audio formats does the AK-240 support?
It supports lossless formats like FLAC, ALAC, WAV, AIFF, and DSD (DSF, DFF, SACD ISO). It also supports MP3, WMA, and others.
Can I use Bluetooth headphones with the AK-240?
Yes, the AK-240 supports Bluetooth 4.0 with aptX codec for high-quality wireless audio. Pair via the settings menu.
How do I update the firmware?
Download the latest firmware from the Astell&Kern website, copy it to the root of the internal memory or microSD, then go to Settings > Update Firmware. Alternatively, use the over-the-air update feature with Wi-Fi.
What is the difference between the 3.5mm and 2.5mm outputs?
The 3.5mm output is unbalanced stereo, while the 2.5mm output is balanced stereo. Balanced output provides better signal-to-noise ratio and channel separation for compatible headphones.
How long does the battery last?
Battery life varies with usage: approximately 10 hours for standard FLAC playback via 3.5mm, slightly less with balanced output or DSD files.
Can I use the AK-240 as a USB DAC?
Yes, go to Settings > USB Mode and select 'DAC' to use it as a USB digital-to-analog converter with your computer (Windows/Mac).
How do I organize playlists?
You can create .m3u playlists on your computer and transfer them to the device, or use the built-in playlist creator within the 'Playlist' menu on the AK-240.
What is the maximum microSD card capacity supported?
The AK-240 officially supports microSD cards up to 64 GB (SDSD format). Higher capacities may work but are not guaranteed.
How do I reset the device if it freezes?
Press and hold the power button for about 10 seconds until the device restarts. If that fails, use a paperclip to press the reset hole located on the bottom edge.
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USER MANUAL AK-240 Astell&Kern
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Product information
Brand : Astell&Kern
Model : AK-240
Category : Mp3 player