I think it's software problem because while I used UAPP/Onkyo HF there are no crackling noise/pops. May be, I will try to check sampling, but I used only 44.1 and Mojo led also said it playing 44.1 so I think there are no resampling.

I just tried Neutron eval. Turned off everything, resampling standard (bitrate from song anyway so this shouldn't effect), 64-bit off. Still heard crackling noise (sometimes, less frequent than Hibymusic), but always heard when pausing. Sound quality good, I think it sounds same as Hiby, seems...

Can you guys recommend some android apps. I have tried several apps and here're my reviews: - UAPP: Too much clear sound, sounds too separated. - Onkyo HF (free, play flac only): a little dark, more balance than UAPP. - Hiby: Nice sound, I think the best. But crackling noise and pops appear...

Im using Fiio x5ii + Leckerton Uha-6s.mkii (opa627) with normal zen 2 and I found the combo amazing. Quick impression: - enough bass - amazing mid - treble a little roll off but enough for me. Very relaxing.   My ok1 broken but if I have to compare zen 2 is easier to drive and more relax to...

That's impressive like Apple ipods. I think i will wait and get one.

What about battery life and sound quality different? Is x5ii completely better than X5?

I'm planning to buy a DAP to use lineout. Do you guys think x5 and x5ii will be different? as they have the same DAC.

OMG I don't know that there's x5ii. I think I will wait for this.

Thank you so much.

I'm planning to buy a x5 and I care about the battery life. How does it last with the last firmware?

Thanks @charleski and @flatmap, so glad to hear that. I am so interested with the Pono power, and so glad that Pono can drive even HD600. Any detailed review about its battery life. I heard that it can stands 8 playing hours, which is a little bit of short.

  Thanks for your impression. I'm not really interested in DX90 because its battery life and specially after I use dx50. The build quality is not good and dx90, like dx50, have volume changing lineout, which is not good. By the way I also heard that X5 is better than dx90 with lineout. That's...

Hello guys, I am interested in buying a Pono but still questioning about its lineout quality. Can anyone have both X5 and Pono compare their lineouts for me or just review Pono lineout would be great, I would be very appreciate it.   I am using Leckerton UHA-6S.MKII (with some pairs of op-amp)...

  Yes I would wait till middle of the next year to consider to buy a new DAP, after I've just bought dx50 and found that it was too different from my taste. Pono is so great in shape (although many people think its shape is weird) and the UI... The downside is battery and I don't even know...

Considering to buy one but don't know if this can drive pk1/ok1 150 ohms.