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The Fiio A5 thread: an upgrade of E12A, MUSES02+LME49600, 800mW, 19Vp-p, 12 hours

Discussion in 'Portable Headphone Amps' started by holypal, Sep 10, 2016.
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  1. Brooko Contributor
    HD600 and HD650 are both surprisingly easy to drive. They don't need a huge amount of either voltage or current. They are actually pretty sensitive despite the 300ohm impedance. The A5 will put out 150 mW into 300 ohms at a peak to peak voltage of 15 Vp-p and 250 mA. E12 has similar power output. Its actually more powerful than the O2 amp, and look how many people were using that as desktop amp to drive their HD600/650.
  2. up209d
    My A5 has very small sound in the output, much smaller than E02i Rocky, even smaller than my ATH M50x standalone, i have to rotate the dial to max to get the same amount of 75% of M50x standalone, but the sound quality is collapsed hence too much gain, anyone has the same experience with me? I think i got the faulty A5.
  3. Brooko Contributor

    Its faulty - unless your source is using variable line-out and you have it turned too low. The A5 is a powerhouse. It would drive the ATHM50X to levels above 100 dB.
    up209d likes this.
  4. Pedro Oliveira
    Thank you George. :)

    But would you say the hd600 is a better all rounder? Wich would you pick for metal or edm and why?

    Havê you ever tried the Fidélio x2 by the way? If yes wich sounds closer to the x2, the 600 or the 650?

    Last edited: Oct 1, 2017
  5. Dobrescu George
    I will echo what Paul said, A5 has tons of power, would blow your ears at 75% with m50x, especially as m50x is not particulary hard to drive...
    up209d likes this.
  6. Dobrescu George
    HD600 works better with metal and EDM for me because I prefer their enahcned top end - HD650 takes some of the sparkle away, and I really like that sparkle. If you're looking for a more svelt sound, HD600 is generally better than HD650 and I don't think you have to worry about it in any way :darthsmile:

    While I noticed major differences between the hd600 and the hd650 I tested, some folks don't notice as big differences, so there might be some variation out there, maybe between different years of production or mnaybe between how used each was when I tested them

    Unfortunately, I don't think I ever heard X2 so far, so I cannot comment on their sound...
  7. Pedro Oliveira
    Thank you once again :)

    I already havê a hd600 and a Fidélio x2. I just wanted a bit more punch and rumble on the hd600... Also since i like the over ear momentum and many people compare it to the hd650....Basically i AM just trying to find reasons to justify a hd650 purchase and if it is worth having both the hd600 and 650 at the same time. :)
  8. Dobrescu George
    I honestly think that it might be better worth to invest in a more different headphone, maybe a HE-560? HD650 is a bit too close to HD600 to justify its price as much as a considerably different headphone would :gs1000smile:
  9. FiiO
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    up209d likes this.
  10. JWolf
    superuser1 likes this.
  11. GrussGott
    Would the A5 drive a 13 ohm impedance HP? I'm looking for a cheap amp (don't necessarily need a DAC) to drive a 13ohm HP.
  12. Brooko Contributor
    Which headphone - impedance isn't the whole story .......
    Dobrescu George likes this.
  13. GrussGott
    Thanks! It's the mrspeakers aeon flux, a planear
  14. Brooko Contributor
    Ah - OK. They are quite low impedance and very low sensitivity, and unfortunately I have no experience with planars. Suggest trying the Mr Speakers thread, and giving them this information (http://www.fiio.net/en/products/59/parameters) and see if anyone has actual experience with the A5. It is quite a powerful portable amp, and I'd be surprised if it wasn't able to drive them decently (14.96 Vp-p peak voltage and 250 mA max current output). It will put 800 mW into a 32ohm load - so it should be enough, even at that low sensitivity.
    Dobrescu George likes this.
  15. Dobrescu George
    Altough Planars tend to eat a lot of juice, A5 has been able to drive some of the Audeze headphones I tried with it pretty well :smile_phones:
    superuser1 likes this.
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