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Aune M2 | AK4490 Dac | Class A amp | Dual Crystek USA Clocks |

Discussion in 'Portable Source Gear' started by t.r.a.n.c.e., May 23, 2015.
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  1. T.R.A.N.C.E.
    Aune M2 32BIT DSD portable music player
    M2 is the 2nd generation portable music player from Aune, co-designed by the M1, B1, S18 team.
     
    2.4'' IPS display
    Full Aluminium Chassis
    AKM AK4490 32bit flagship DAC chip
    4 Digital filter options
    Class A discrete transistor headphone amp integrating elements from B1 (co-designed by B1 team).
    Gain adjustable for headphones and earphones
    PGA2311 Analog Volume control
    Over 3.1VRMS output
    SNR: -116dB
    HO THD+N- 0.001% (Loaded)
    HO noise: 5.86uV (and at near max volume @3.1VRMS noise barely changes @6.08uV!)
    LO THD+N- 0.001%
    LO noise: 2.76uV
    3200mAh battery
    Battery life 9 hours of continuous playback.
    Dual ultra-low jitter crystal oscillators (44khz, 48khz-192khz, DSD)
    Asynchronous clock and CPLD technology
    Micro-SD card support 128GB
    Dimensions: 65*110*17 (mm).
    Supported formats-
      WAV:16bit|24bit|32BIT- 44.1K/48K/88.2K/96K/176.4K/192K WAV + CUE
      FLAC:16bit|24bit- 44.1K/48K/88.2K/96K/176.4K/192K
      APE:16BIT/44.1K APE + CUE
      DSD format:DSF/DSD64 - DFF/DSD64 ISO
      AAC, MP4A, MP3
           
     


    There are 3 models of M2:
     
    -Aune M2- $350- Uses Japanese Crystal Oscillators
    -Aune M2 Pro-$500- Uses custom Crystek (USA) Crystal Oscillators pictured below and opamps upgraded.
    -Aune M2S- $650- Has the upgrades of the Pro version and adds Teflon substrate PCB, this is the only dap to use Teflon PCB which are only found in a few very expensive desktop audio gears.
     
     
    00057171.jpg 00057185.jpg TB20RwydXXXXXbRXXXXXXXXXXXX-825604873.jpg
     
  2. beeman
    i have recently bought the m1. i usuually use a sony mz-rh1 (line-out) topping amp.  To be honest i prefer the m1 (no headphone amp). It has a neutral sound. Mids are warm - and seperation is excellent. I am aware of a very slight sibilance so need to pair with the right headphones - Paired with sony mdr 7750 iems it sounds great. To be honest i thought that i would be intereted in m2 - simply from basis of wider format support. But conversion from flac to 16 bit wav has been easy with mediamonkey ... so not sure about m2. Looking forward to hearing some reviews of the m2
     
  3. RAFA
    Here is some sort of diary of the development progress:
     
    http://bbs.hifidiy.net/forum.php?mod=viewthread&tid=1040163&extra=&highlight=aune&page=1
     
  4. T.R.A.N.C.E.
    ok
     
  5. T.R.A.N.C.E.
    I'm liking the M1 I've got, and this M2 looks like it has improved in several important areas, like dac, amp, power regulation and volume control . I can definitely see the amp section has an improved discrete transistor buffer section, no doubt influenced by B1. And the AKM4990 is looking to be a great dac. The power regulation is stepped up by using beefy LDO's from TI. The volume control is improved by using the TI PGA2311 which will get rid of channel imbalances that rotary pots have. The backbone of Aune's sound is their CPLD tech for a better audio signal sent to the dac, means everything else in the chain will sound better.
     
  6. RAFA

    No full size SD-Card. Even Aune is giving up on that :frowning2:
     
  7. Vignelli
    come on man.. move on.. :D
     
  8. T.R.A.N.C.E.
     
    It is a shame yes, I love full size SD. M2 has all circuits on a single pcb unlike M1 with double pcb's, so needed to cut down unnecessary things on the M2. They moved to single pcb on the M2 so it could have a larger battery than M1.
     
  9. RAFA

    Life is hard for me, being the full size type of guy...


    Seeing the PCB, it might not be the fatest player... Fits nicely in the pocket.
     
  10. Kenntak
    It does not have ALAC support?
     
  11. orlando2989
    http://item.taobao.com/item.htm?spm=a1z3o.7695460.14.1.Zr5Fpj&id=520134428266
     
    is it real or fake?
     
  12. T.R.A.N.C.E.
    ^ Real, M2's been released! Now we just have to wait until an international seller gets it.
     
  13. soundblast75
    Nothing on their website?
     
  14. T.R.A.N.C.E.
     
    Because it looks like Aune is only taking orders for Chinese at the moment, this is Aunes own forum: http://translate.google.com/translate?depth=1&hl=en&prev=search&rurl=translate.google.co.in&sl=zh-CN&u=http://bbs.hifidiy.net/forum.php%3Fmod%3Dviewthread%26tid%3D1102762%26extra%3Dpage%253D1
     
  15. soundblast75
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