Product Comparison: Astell&Kern AK70 vs Fiio X7II

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General Specifications
About the Product
The Misty mint Astell&Kern AK70 MKII Portable High-Resolution Audio Player and USB DAC uses dual Cirrus Logic CS4398 chips and supports 24-bit/192 kHz bit-to-bit type playback. The 64GB of on-board storage can be expanded with a microSDXC card (up to 256GB).
The X7 Mark II is among the first of its kinds in Chinese portable music players to adopt 2GB of RAM, allowing it to seriously multi-task and to provide a more fluid experience. The player also comes with 64GB of internal storage and 2 micro-SD card slots, each supporting up to 256GB expansion cards.
Key Specs
64 GB
64 GB
Integrated Speaker(s)
What customers say about "Key Specs"
Astell&Kern AK70 64GB (Hi-Res support, microSD support, Misty mint)
  • I have to give a note of appreciation to A&K in that they use varying font sizes to display titles depending on the length of the title. This maximizes the information that is displayed.
  • The resolution is actually very nice also! I'm very pleasantly surprised at the quality of the display and the fluid and simple user interface
  • The touch screen is bright and easy to use and the interface is similar to my smartphone.
  • The information displayed is mostly information about the music file itself and not about the musical content. I want more of the musical content information.
  • I find the touch screen hard to use and am not comfortable with the user interface (I don't use anything else with a touch screen) after using the unit 4 hours a day for 15 days.
Fiio X7II 64GB Portable Music Player
  • A very engulfing sound that maintains a clear, wide soundstage. Hits all the right notes sonically.
  • Highs and mids are sublime, and the bass is clean, deep, and punchy.
  • I only have 10 gigs of music, so thankfully all my music can fit in the internal storage.
  • I was originally attracted to this because of the large storage size as I have well over 1T of files I would like mobile.
  • FiiO X7 Mark II is a fantastic DAP! Very easy to operate with just the right controls, great build quality and plenty of storage for your music on the go.
Size & Weight
Misty mint
5.2 in.
5 in.
3.8 in.
3.14 in.
2 in.
0.6 in.
10.6 oz.
7.4 oz.
What customers say about "Size & Weight"
Fiio X7II 64GB Portable Music Player
  • I absolutely love this DAP, it is compact, light weight, well built, sounds great and is very reasonably priced.
  • Small and light. Very good for a portable device in this price range.
  • It looks great and I really like the small size. That feels sturdy and has a nice display screen.
  • Design wise, this is great, small and curvy. Sound is very good, not a powerhouse but hi-res files sound great.
  • The size is beneficial as it easily slides in a pocket or an armband for working out.
Supported Audio Formats
DSD, DXD, ISO, DSF, APE Fast, APE High, APE Normal, APE Extra High, APE Insane, Apple Lossless, AIFF, FLAC, WAV, WMA Lossless, MP3, AAC, WMA, OGG
Memory Card Slot
3.5mm Jack
Line Out, Digital Output, Headphone Out, Micro USB
3.97" IPS TFT (800x480) touchscreen
Voice Recorder
Video Playback
Bluetooth Enabled
2 x Cirrus Logic CS4398
Wi-Fi, Dual microSD card slots, In-cell touch technology, QC2.0, MTK PE, Dual-mode Bluetooth
What customers say about "Features"
Astell&Kern AK70 64GB (Hi-Res support, microSD support, Misty mint)
  • I have ripped all my CDs to FLAC format years ago and put the physical copies away. The AK70 plays any digital file format out there, including Apple Lossless, FLAC and Wave.
  • The player has 64gb of internal memory and a slot for a microsd card. I added a 128gb microsd card and the player had no issues recognizing it.
  • I was able to play music directly from the nas drive and even copy songs over wifi to the player's internal memory.
  • For some reason the AK70 during playback keeps showing a file format/bit rate that does not match my actual audio files (FLAC).
  • Poor quality bluetooth.It has no range even when it's right in front of you.Plus in bt mode you lose half volume.
Fiio X7II 64GB Portable Music Player
  • I like the sound. The unit was quick and easy to setup with beautiful SQ.
  • Like other users said, the balanced output is definitely better than the regular 3.5mm output on my se846.
  • Music files played with no issues. Also bought some hd tracks and no issues playing.
  • Everything worked fine, the user interface is fine, no crash, 2.5mm/3.5mm output no problem, usb dac no problem, bluetooth once paired no problem.
  • One of my concerns so far is that the device generates more heat when operating than it should.
Included With Unit
USB cable
Micro USB cable, Coaxial digital adaptor cable, Tempered glass screen protector, Clear case, Ejector pin, Decorative strip, Leatherette case
Warranty / Certifications
Manufacturer Warranty
1 year(s)
1 year(s)

Astell&Kern AK70

Fiio X7II

Battery Life
8 hours
What customers say about "Power"
Astell&Kern AK70 64GB (Hi-Res support, microSD support, Misty mint)
  • The battery life is great. Just keep the screen off.
  • I just hope the battery is as good as everything else. Only time will tell.
  • Battery drains fast, I didn't drain it fully but I think it's good for 4 hours, depending on the bit rate and how loud you're going to push it.
  • Battery life is not fantastic, but not a deal breaker.
  • I give it 4 stars because just because of the battery life.
Fiio X7II 64GB Portable Music Player
  • Battery life as advertised which is not great but it's the same as others.
  • As far as battery life, if you exclusively listen without WiFi , you get about 8 hours.
  • Battery life is very good for such a tiny unit, I'm getting about 8 hours and that includes streaming and lots of flac and dsd.
  • After 5 and half hours of continuous play the battery just died.
  • I found out that the battery when fully charged lasts only 5 hours and half.
Other Information

Price History

Other reviews