OPPO HA-2 Portable Headphone Amplifier/DAC Discussion Thread
Aug 30, 2015 at 4:21 AM Post #1,981 of 4,883
I have had the Oppo HA-2 since the day it came out in the UK.

So far I've used it with the following headphones -

Oppo PM-2, Oppo PM-3, Audio Technica M50x, AKG K702, Sennheiser HD518, Sony MDR1RNC, Sennheiser HD239, all with no issues whatsoever.

I even used the HA-2 as a DAC only, taking sound out through the line out.

Source equipment used with the HA-2. LG G4, iPod Classic 160gb, and a wide variety of mobile phones, too many to list, so ask me. When I review phones on my blog I always test USB Audio along with using USB Audio Player Pro app.
 
Aug 30, 2015 at 5:18 AM Post #1,982 of 4,883
  I think he may be referring to Phones as in mobile/cellular phones.
 
In that regard I do remember reading that one popular oppo mobile phone did not work and that oppo mobile and oppo audio are 2 separate entities in that one has nothing to do with the other. Can you confirm that @HasturTheYellow
 
I would buy a phone that has already been confirmed as working with the oppo HA-2.

 
I can confirm that my Oppo R7f does NOT work with my HA2.
mad.gif
 
 
Update Sep 29, 2015: Oppo R7f phone finally works with this Oppo HA-2 DAC thanks to the latest R7f firmware (ColorOS 2.1.0i Build Number R7fEX_11_150914). The charging doesn't work though. 
 
Aug 30, 2015 at 5:23 AM Post #1,983 of 4,883
Oppo has a flagship store here in Singapore that showcases both their phones and audio gear. My HA1 was bought from a different dealer, but I do plan on heading here to see if the HA2 will work with my S6 Edge.

http://www.hardwarezone.com.sg/m/tech-news-oppo-opens-new-flagship-store-suntec-city

 
Yes, that's the store I bought my Oppo R7f phone and Oppo HA2 from. 
 
Aug 30, 2015 at 8:14 AM Post #1,984 of 4,883
  Is Wikipedia infallible? I chatted with someone on OPPO Digital's Facebook and he made it clear OPPO Digital had no connection with OPPO Electronics.
 

  Yeah, I'm waiting on a reply re this myself. I'm quite "sure" I read somewhere that oppo mobile and the oppo that gave us the HA-2 are mutually exclusive.

This is from the Wikipedia link on Oppo. Just read the second and third paragraphs closely to confirm that they are indeed a separate entity:

Regional division[edit]

OPPO Indonesia,OPPO Vietnam, OPPO Thailand, OPPO Mora, OPPO India, OPPO ABB in RIL Hazira, OPPO Pakistan, OPPO Bangladesh and OPPO China are the same brand, but completely different divisions designing products for their own regional needs.

OPPO Digital Inc., is a completely independent operation that has licensed the OPPO brand name. They are based inMountain View, California United States. It is known for its universal upconverting DVD and Blu-ray Disc players.

OPPO Digital Inc. was founded in California in 2004.[2] Their first product was the OPPO OPDV971H Up-Converting Universal DVD Player.[3]

 
Aug 30, 2015 at 8:27 AM Post #1,987 of 4,883
  That's the oppo phone I was reading about. Why does it not work, Software/Hardware??

I have no clue.  The sounds keep coming through the phone speakers instead of HA2. Folks at Oppo Lifestyle store in Singapore also have no clues.  I have contacted both Oppo Digital (HA2) and Oppo Mobile (R7f) and none of them can help.  So I gave up and went ahead buying a cheap China phone instead as a dedicated DAP and it works seamlessly with HA2.
 

 
Aug 30, 2015 at 11:15 AM Post #1,988 of 4,883
 
I can confirm that my Oppo R7f does NOT work with my HA2.
mad.gif

 
Which USB audio software did you use for testing?
Native USB audio software or third-party USB audio  software (USB Audio Player PRO [the most compatible], Onkyo HF Player or HibyMusic)?
 
Android USB audio
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/7035#post_11822387
FAQ:
http://goo.gl/A4dCnP
 
How about compatibility of Android device with USB DAC?
 
At the present time, Android USB Audio is in its infancy.
The FiiO E17 USB DAC/amp for example was not compatible with the first version of USB audio of the Samsung Galaxy S3. The E17 can now work with the S3.
 
It is not easy for the latest entrants (Samsung, Sony, HTC, LG, ..., 3rd party USB audio developers, and now Google with Android 5.0 Lollipop) in the existing USB DAC jungle because the USB specification allows some variability.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/4080#post_10270550
 
The latest entrants have to adapt their USB audio implementation to (most) existing USB DACs.
They have to be compatible with different interpretations of the USB specification.
..."
 
 
  So I gave up and went ahead buying a cheap China phone instead as a dedicated DAP and it works seamlessly with HA2.

 
What is the exact model?
I would like to include it in the list of stock Android-powered devices reportedly interworking with compatible USB DAC.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/7035#post_11822387
 
Thanks!
 
Aug 30, 2015 at 11:41 AM Post #1,989 of 4,883
   
Which USB audio software did you use for testing?
Native USB audio software or third-party USB audio  software (USB Audio Player PRO [the most compatible], Onkyo HF Player or HibyMusic)?
 
 

I tried the music player app that comes with Oppo R7f, I also tried Google Play Music app, Neutron Pro, and one app suggested for HA-2 in Oppo Digital FAQ homepage. None of them work can make Oppo R7f works with HA-2.
 
 
 
   
At the present time, Android USB Audio is in its infancy.
The FiiO E17 USB DAC/amp for example was not compatible with the first version of USB audio of the Samsung Galaxy S3. The E17 can now work with the S3.
 
It is not easy for the latest entrants (Samsung, Sony, HTC, LG, ..., 3rd party USB audio developers, and now Google with Android 5.0 Lollipop) in the existing USB DAC jungle because the USB specification allows some variability.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/4080#post_10270550
 
The latest entrants have to adapt their USB audio implementation to (most) existing USB DACs.
They have to be compatible with different interpretations of the USB specification.
..."
 

 
Yes, I have read about this info and in fact, precisely because of this info I thought I should stick with Oppo branded phones to avoid any incompatibility issues. But who would have thought that their latest Oppo R7f is NOT compatible with Oppo own HA-2 product.  
 
 
   
What is the exact model?
I would like to include it in the list of stock Android-powered devices reportedly interworking with compatible USB DAC.
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/7035#post_11822387
 
Thanks!
 

 
It's Mi phone model Mi4i. It works seamlessly with HA-2 with all music apps I tried.
http://www.mi.com/sg/mi4i/
 
Aug 30, 2015 at 3:01 PM Post #1,991 of 4,883
  I tried the music player app that comes with Oppo R7f, I also tried Google Play Music app, Neutron Pro, and one app suggested for HA-2 in Oppo Digital FAQ homepage. None of them work can make Oppo R7f works with HA-2.

 
The stock music player, Google Play Music player or Neutron Pro music player interface with the native USB audio.
USB Audio Player PRO (UAPP), HibyMusic or Onkyo HF Player have their own "user space" USB audio software.
These third-party USB audio behave differently than the native USB audio.
 
 

 

 
Aug 31, 2015 at 2:30 AM Post #1,992 of 4,883
Will this work with a fiio x5 as a dac


Nope.

Edit: If you mean using the X5 as a digital source (transport) to the HA-2 then no as the HA-2 does not have coaxial input and the X5ii does not output music through USB. If you mean using the HA-2 amp section from the X5ii line out, then yes.
 
Aug 31, 2015 at 2:36 AM Post #1,993 of 4,883
HasturTheYellow has mentioned multiple times in the HA-1 thread and the PM-1 thread that Oppo Digital Inc. is a completely separate entity from Oppo electronics apart from licensing the Oppo name, as mentioned in the Wiki. Take that as you will but I wouldn't expect any of the resources or research and development to be shared.
 
Aug 31, 2015 at 8:50 AM Post #1,995 of 4,883
Please look at my thread about fiio x5-II vs iphone + oppo ha-2 - http://www.head-fi.org/t/779475/what-would-be-better-oppo-ha-2-or-fiio-x5-ii
 

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