OPPO HA-2 Portable Headphone Amplifier/DAC Discussion Thread
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Bought that cable 2 weeks ago. Now for the SE and PM3. Is the DAC in the SE better than the one in the Sony??

Nice photography by the way.
I hope you're not disappointed in this answer, but it's impossible to evaluate the Sony NWZ-A17 DAC without listening to its amp at the same time. There is no available line out from the DAC section, so the only way to hear the DAC is through the amp, either into efficient IEMs, as intended, or by double-amping, with the headphone out driving an external amp (yuck). I tried that briefly, but I didn't care for what I heard. I may have had such low expectations due to double-amping that I didn't give it a chance.

Sony isn't famous for making DAC chips. That's kind of an underhanded comment, when you consider how good the NWZ-A17 DAC+amp can sound with efficient transducers, but in the end, I firmly believe Oppo's use of an ESS Sabre DAC delivers "better" audio (but don't forget that I have no way to judge the Sony DAC without its weak amp section.)

My Sony PCM-M10 recorder/player actually has a Line Out for its DAC. It's an older product, but it sounds bright and just a wee bit grainy relative to other DACs I've tried with my portable amps. Its headphone out isn't as good as that of the much smaller NWZ-A17, even though it's got a little more power. The Sony PCM-M10 most definitely sounds best with the Line Out driving a potent amp. This was my "travel rig" for several months:



Ordered PM-3 and HA2 SE a few moments ago. Will eventually get a Wywires Red headphone cable for PM-3s. Always a great improvement.
I think you're going to be in a state of euphoria for at least a few weeks, listening to your microSD library on that rig.

Mike
 
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Timster

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Received update from tech saying engineering are still looking into it. I'm not holding my breath.

I'm reading about this on a lot of forums and everyone mentions 10.3.x on an iPhone. Has anyone tried it on an iPad with same iOS, if they have one, to confirm it is not just phones with the issue?
Definitely an issue on iPad too. Running iPad Mini 3, 10.3.? and drop outs galore. Less if I run hi-gain on the HA-2. Was using an non certified cable so will have to try an original cable next
 
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jegnyc

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Definitely an issue on iPad too. Running iPad Mini 3, 10.3.? and drop outs galore. Less if I run hi-gain on the HA-2. Was using an non certified cable so will have to try an original cable next
Does your iPad have cellular capability?
 
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Timster

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Sure does. And confirmed running iOS 10.3.1
 
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jegnyc

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Sure does. And confirmed running iOS 10.3.1
OK we have two reports about iPads: a WiFi only unit that is not having problems and a unit with cellular capability that does have problems. Hardly an adequate sampling, but perhaps suggestive.
 
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OK we have two reports about iPads: a WiFi only unit that is not having problems and a unit with cellular capability that does have problems. Hardly an adequate sampling, but perhaps suggestive.
So I have sat the iPad on the kitchen bench this morning, hooked a little amped speaker into the line out of the HA2 and started playing. So far Dire Straits' Making Movies has played through without stopping.. Cellular is on, but nothing is moving and nothing else is happening on the iPad. I had a lot pf problems on Thursday when I was moving on a train, with intermittent cell coverage.

On Monday I am travelling to Manila and will have the gear with me on the plane. I will have Airplane mode on, and will see what happens and report back on Tuesday hopefully.
 
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jegnyc

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So I have sat the iPad on the kitchen bench this morning, hooked a little amped speaker into the line out of the HA2 and started playing. So far Dire Straits' Making Movies has played through without stopping.. Cellular is on, but nothing is moving and nothing else is happening on the iPad. I had a lot pf problems on Thursday when I was moving on a train, with intermittent cell coverage.

On Monday I am travelling to Manila and will have the gear with me on the plane. I will have Airplane mode on, and will see what happens and report back on Tuesday hopefully.
Your descriptions suggest to me that you may be suffering from the second issue described by Halo9 in post 4386, not the third, which is apparently specific to 10.3.x and is shared by a number of DACs.

Gosh, this is confusing.
 
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Your descriptions suggest to me that you may be suffering from the second issue described by Halo9 in post 4386, not the third, which is apparently specific to 10.3.x and is shared by a number of DACs.

Gosh, this is confusing.
Maybe so, but I have been using this setup for more than 12 months on the same train trip, and only recently has this started. Due to work travel though I can't say when I upgraded(?) to 10.3 or whether the current issue started at that point. It is definitely a different issue from the slow down and distorted sound that can somehting happen, seemingly when cell coverage changes.

Edit - Just looked at the "second issue" and it is definitely not that. It is number 3 on that list for sure.
Maybe it only happens on cell enable when its on the move?

I'll test over the next few days
 
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Maybe so, but I have been using this setup for more than 12 months on the same train trip, and only recently has this started. Due to work travel though I can't say when I upgraded(?) to 10.3 or whether the current issue started at that point. It is definitely a different issue from the slow down and distorted sound that can somehting happen, seemingly when cell coverage changes.

Edit - Just looked at the "second issue" and it is definitely not that. It is number 3 on that list for sure.
Maybe it only happens on cell enable when its on the move?

I'll test over the next few days
In that case, it definitely sounds 10.3 related. Thanks.
 
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Thanks Mike for your insights and great pics. SE and PM-3 arriving next Friday.
 
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Perfect, thanks! I should have mentioned in terms of quality I was referring to build quality rather than audio, oops :)



Ouch! That would drive me NUTS. I'm looking at buy the new Samsung S8+ in a months time .. if I have this kind of issue I'll have to re-evaluate some things .. I don't really want to have to carry a portable charging brick with me everywhere
@DrunkSaru have you found a better solution to this yet by chance ?

I now have a Samsung S8+ and this is BEYOND NUTS ! Surely theres a way we can fix this ?

"USB charging connected device" can die in a fire :frowning2:
 
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In that case, it definitely sounds 10.3 related. Thanks.
OK, so I tested this yesterday on a flight with my HA2, Ipad Mini and Bose QC20s. HA2 set to low gain.
1. Playing music only using "Equaliser" app that is my usual player, screen off, airplane mode on..... played ok for a at least an hour.... I dozed a little but it was still playing when I woke up.
2. Opened the ipad cover, and the music stopped through the headphones but was still playing in the app. turned the HA2 off and on, and pressed play and away we go again.
3. Tried again, and this time the music kept playing while it opened, so I turned off airplane mode (its OK there was WiFi on the flight) and the music stopped after a minute or two.
4. Tried playing some videos that were downloaded into the Netlfix app. Had a few cutout of sound in 15 mins.

Seems to me with this limited test, and my experience last week on a train and on the weekend, that the issue affects the connection to the HA2 if the ipad (or phone?) is doing some intensive work such as playing a video, trying to connect to networks etc. If it's doing nothing else, with the screen off, it seems to be OK.

This did not happen on earlier iOS versions

Cheers
Tim
 
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Yes, for my HA-2SE, while the problem still persists, the 10.3.2 updates make it happen much less often now
 
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Thanks, Tim.

Any chance you can report your experience here:

https://discussions.apple.com/message/31758572?ac_cid=tw123456#31758572

It's more detailed than most of the comments (including mine).

I'm tracking the Mojo thread as well. It sounds as if 10.3.2, officially released yesterday, solved the problem for some people, but not everyone.
Done! Going to download 10.3.2 ASAP but am now in Manila with work for the four weeks and can't really test it on the move. I'll see what I can come up with
 
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