MP3 Players
JadeAudio /FiiO JM21 Android 13 Hi-Res
7.5SoundGuys scoreRead our review ›
$179.99at Amazon
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Astell&Kern
Astell&Kern KANN Alpha
MSRP
$1,099View on Amazon
Manufacturer's suggested retail price at launch. Check retailers for current availability.
Key specs
Headphone Jack
YesMost commonTrue89%False11%
True is the most common — on 89% of the 35 mp3 players we've cataloged (of 38).
Bluetooth
YesMost commonTrue89%False11%
True is the most common — on 89% of the 28 mp3 players we've cataloged (of 38).
Expandable Storage
YesMost commonTrue84%False16%
True is the most common — on 84% of the 25 mp3 players we've cataloged (of 38).
Battery Life Typical
14.5 hBelow average14.5 h
8 h40 h
below average for mp3 players — based on 20 of 38 we've cataloged.
Connectivity
- Headphone Jack
- Yes
- Bluetooth
- Yes
- Bluetooth Codec
- LDAC, aptX HD
- Bluetooth Version
- 5.0
- Microsd Reader
- Yes
- Wifi
- Yes
- Headphone Jack Size
- 2.5mm balanced, 4.4mm balanced
Memory
- Expandable Storage
- Yes
- Max Expandable Storage
- 1024 GB
- Storage
- 64 GB
Battery
- Battery Life Typical
- 14.5 h
- Charging Method
- USB-C
Sound
- Supported Formats
- FLAC, ALAC, AIFF, WAV, DSD256, MQA
- Balanced Output
- Yes
- Output Power Mw
- 12000 mW
Design
- Color Options
- Blue
Display
- Touchscreen
- Yes
- Size In
- 3.5 in
Release
- Date
- 2020-10
- Msrp Usd
- 1099 USD
- Year
- 2020
Software
- Operating System
- Android 9.0
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