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Walnut Hi-Fi V2 WAV (& MP3) Player by wt - :ok_hand: screenless budget killer combo DAP/Amp :ok_hand:

Discussion in 'Portable Source Gear' started by vapman, Dec 8, 2016.
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  1. LaughMoreDaily
    I'm not impressed by the Walnut's sound, I hope it changes after burn in. It's not warm, it has a high pitch sound to it... it sounds the same in every pair of IEM's and earbuds I use. You really do have to change the opamp, to make this thing better... I hope I was sent the new revision of v2 by DD-Audio (2nd Wally), so I can see if that is much better for you guys.
     
  2. nmatheis Contributor

    What IEM are you using with it? The output impedance is terribly high, so it's best not to use multi-BA IEM. It'll really put the smack-down on their sound signature!
     
  3. flamesofarctica

    That really doesn't sound like the Walnut I recognise!
     
  4. LaughMoreDaily
    I think you're right, the headphones I put in my ear aren't good enough for the Walnut, that's disappointing considering all the money I spent on them. 
     
    The KOSS KSC75's sound great with the Walnut! :)
     
  5. nmatheis Contributor

    It's not that they're not good enough for the Walnut. It's that Walnut wasn't designed with multi-BA IEM in mind. If it was, the output impedance would be significantly lower. Just gotta choose higher impedance dynamic drivers for Walnut...
     
    waynes world likes this.
  6. flamesofarctica

    Or those that like a bit of power, like the Monk+

    (Edit, at 64 ohms I suppose they're relatively high compared to most IEMs)
     
  7. nmatheis Contributor

    Yeah, not many IEM at 64ohms...
     
  8. weedophile
    Yea i had issues in the past with the KZ ZST. Otherwise, all budget buds and headphones work really well with the nut, phenomenal in fact!
     
  9. Dark Helmet
    Look at the Edifer H180 on amazon for $12.98.  Very tigh,t plenty of bass, and great sound signature overall.  This is with a stock Walnut, the only thing I changed was the DIP socket.
     
  10. Dark Helmet
    The Pic i saw on Ali express didn't show a hi low switch.  There was this though which looks similar.  (I didn't check the specs)
     
    https://www.aliexpress.com/item/Newest-JAZZ-R7-0-protable-amplifier-HIFI-fever-headphone-audio-power-amplifier-mini-portable-lithium-DIY/32798105013.html?spm=2114.10010108.1000014.37.hPzSkT&scm=1007.13338.79672.000000000000000&pvid=2fc34357-9a5b-414f-b162-ac217f4e3f83&tpp=1
     
  11. macky112

    In all honesty, From the Chinese user reviews on the official Walnut listing in Taobao, they prefer rolling the 2604 opamp, their reception of Walnut V2.1 with solder 2604 is better than the rolled 2604 version.

    What I take away is, Chinese community has a preference for 2604!

    In terms of phone pairing, both V2 vs V2.1 will be the same: bad "synergy" with multiple BA/hybrid IEMs and bad "synergy" with some 32ohm and lower phones

    Koss ksc75 is good pairing because of its 60ohm impedance

    Good reading material:
    http://www.head-fi.org/t/800208/the-rmaa-rightmark-audio-analyzer-source-and-audio-device-measurement-thread-measurements-in-post-3-tutorial-in-post-2/135#post_13107087
     
  12. silverfishla
    You can try that Ifimatch thingy. I have one and it works to make a low ohm earphone that become too energetic or brash much more managed and focused. I'll give it a try when I get my Walnut in the mail and let you know if it's good with the Walnut.
     
  13. Dark Helmet
    The DIP socket makes a difference.  I replaced the stock one with a gold plated one.
     
  14. alexandros a
    No man....this is a replica..Dont risk on that one...here is the link from U3.6 even if this bluebird is now out of stock ask the seller to bring it back :frowning2:link)
    BlueBird new U3.6 portable headphone amplifier HIFI EXQUIS Class A headset amps standard version OPA2604 op-amp
    http://s.aliexpress.com/rMJFvAVv
    (from AliExpress Android)
     
    LaughMoreDaily likes this.
  15. LaughMoreDaily
    Ifimatch? No idea what that is. Let us know how you like it.
     
    Maybe someone with low ohm headphones can use an adapter like this one? It raises the ohms by attaching the plug adapter to the original plug.
     
    https://www.aliexpress.com/item/3-5mm-20ohm-75ohm-100ohm-175ohm-Impedance-Adapter-Plug-for-HiFi-Player-Earphone/32671544661.html?spm=2114.13010308.0.0.Cj3Oar
     
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