[T Bone]

  I suppose to tell, you could use a conversion program to convert the DSD version to FLAC, then try. If you care.

You are 100% correct.  Encoding differences are irrelevant if they are mastered differently. 
 
I took your suggestion and burned a 24-bit/96kHz FLAC using the .DSF file (SACD) as the source.  (conversion by dbPowerAmp R16)
The FLAC version didn't sound bad, but it wasn't anywhere as good as the DSD source.   
 
The bit stream version had a much greater soundstage and air.  
 
That was an interesting & enlightening experiment - thanks for the suggestion.  I'm glad I tried it for myself.  

 

[FLTWS]

  I had the exact same experience.  I was getting intermittent noise when rotating the volume knob.  I also had intermittent volume discrepancy between the left & right channels.   Oppo replaced the volume control and returned it incredibly quick.   

 
I bought my Oppo HA-1 several months ago, could never get it to accept the AES/EBU signal from my Emotiva ERC-3. Called both Oppo and Emotiva a couple of times. Both pointing the finger at each other. Last call to Oppo and they suggested that the output voltage of the ERC-3 might not be sufficient to drive the HA-1 as they had that experience on at least  one other occasion, (although the ERC-3  optical and coax outs worked fine into the HA-1), and that the most recent firmware update for the HA-1 should have no bearing on my issue. Next and last call was to Emotiva. I asked them to provide me with the AES/EBU output voltage and specify into what load the measurement was made. Never heard back. I tried 3 different manufactures AES/EBU digital cables with appropriate Neutrik connectors but no joy. Both companies were responsive to my calls but couldn't give me a solution.
 
I solved the problem by auditioning Schiit Yggdrasil, worked perfectly and sounds superb (to my ears) with the ERC, so I'm keeping it.
 
The Oppo has about 50 hours on it and is collecting dust at this point so I may never experience the noisy volume pot issue.

 

[Allanmarcus]

 

  I suppose to tell, you could use a conversion program to convert the DSD version to FLAC, then try. If you care.

You are 100% correct.  Encoding differences are irrelevant if they are mastered differently. 
 
I took your suggestion and burned a 24-bit/96kHz FLAC using the .DSF file (SACD) as the source.  (conversion by dbPowerAmp R16)
The FLAC version didn't sound bad, but it wasn't anywhere as good as the DSD source.   
 
The bit stream version had a much greater soundstage and air.  
 
That was an interesting & enlightening experiment - thanks for the suggestion.  I'm glad I tried it for myself.  

Damn it! You weren't supposed to hear a difference! Now I have to try, which means getting s DSD player for the Mac, then getting some content!  

 

[etc6849]

Does anyone have the IR remote codes for the Oppo HA-1?

 

[etc6849]

Here are some codes I found using IRScrutinizer in a war dialer fashion.
 
Guess there are no discrete mute codes?  I will just have to volume down .5dB to for mute off, and use volume down .5dB + mute toggle for mute.
 
Good news is discrete on and off commands do exist   Click below to view the Pronto Classic Hex codes.

Spoiler: [Mod Edit: Put in a spoiler tag so it is less spammy.

] VOL UP SMALL: NEC1_D98F19: NEC1 Device: 98 Function: 19
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
PLAY PAUSE: NEC1_D98F20: NEC1 Device: 98 Function: 20
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
VOL UP LARGE: NEC1_D98F21: NEC1 Device: 98 Function: 21
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
VOL DOWN SMALL: NEC1_D98F23: NEC1 Device: 98 Function: 23
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
VOL DOWN LARGE: NEC1_D98F24: NEC1 Device: 98 Function: 24
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
POWER ON/OFF: NEC1_D98F26: NEC1 Device: 98 Function: 26
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
TEST MODES: AUDIO TONE AND SCREEN TEST: NEC1_D98F28: NEC1 Device: 98 Function: 28
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
SCREEN TEST NO AUDIO TONE: NEC1_D98F29: NEC1 Device: 98 Function: 29
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
RESET: NEC1_D98F30: NEC1 Device: 98 Function: 30
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
RED SCREEN: NEC1_D98F31: NEC1 Device: 98 Function: 31
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: USB BACK: NEC1_D98F48: NEC1 Device: 98 Function: 48
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: USB FRONT: NEC1_D98F49: NEC1 Device: 98 Function: 49
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: COAX: NEC1_D98F50: NEC1 Device: 98 Function: 50
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: AES/EBU: NEC1_D98F51: NEC1 Device: 98 Function: 51
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: XLR: NEC1_D98F52: NEC1 Device: 98 Function: 52
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT BLUETOOTH: NEC1_D98F53: NEC1 Device: 98 Function: 53
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: RCA: NEC1_D98F54: NEC1 Device: 98 Function: 54
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
INPUT: OPTICAL: NEC1_D98F55: NEC1 Device: 98 Function: 55
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 05F7 015B 0057 0016 0E6C
FIRMWARE UPGRADE MODE: NEC1_D98F64: NEC1 Device: 98 Function: 64
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
RESET: NEC1_D98F65: NEC1 Device: 98 Function: 65
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
MUTE TOGGLE: NEC1_D98F67: NEC1 Device: 98 Function: 67
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
WHITE SCREEN: NEC1_D98F72: NEC1 Device: 98 Function: 72
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
NEXT: NEC1_D98F80: NEC1 Device: 98 Function: 80
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
PREVIOUS: NEC1_D98F84: NEC1 Device: 98 Function: 84
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
POWER ON: NEC1_D98F90: NEC1 Device: 98 Function: 90
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
POWER OFF: NEC1_D98F91: NEC1 Device: 98 Function: 91
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
DIM DISPLAY: NEC1_D98F95: NEC1 Device: 98 Function: 95
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 05F7 015B 0057 0016 0E6C
HOME SCREEN TOGGLE MENU: NEC1_D98F128: NEC1 Device: 98 Function: 128
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 05F7 015B 0057 0016 0E6C
SOURCE TOGGLE MENU: NEC1_D98F129: NEC1 Device: 98 Function: 129
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 05F7 015B 0057 0016 0E6C
SOURCE TOGGLE MENU: NEC1_D98F130: NEC1 Device: 98 Function: 130
0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0041 0016 0016 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 05F7 015B 0057 0016 0E6C

 

[Bangkokphoto]

My first post on this forum, happy I found this place.
 
I have owned 2 TEAC DACs, a Dragonfly, and dozens of integrated RealTek, Creative, and ASUS DACs on computers/sound cards over the years; nothing overly impressive about any of them. I have listened to the AudioLab MDAC, Cambridge DACMagic, Marantz DAC1 and the McIntosh D100. I finally got my hands on an Oppo HA-1 and I am extremely impressed (really late in the game here).
 
I never took Oppo seriously and not sure why. Back in the beginning of computer audio ESS was not desirable; had nothing but problems with Compaq’s integrated ESS Audio and the Turtle Beach ESS stuff over the years, I wanted to stay away from ESS. Anyway, I wanted a DFF/DSF DSD solution for under $2,000. Playing DSD over my previous setup(s) was “buggy” and I’m not sure I was ever truly listening to DSD or some low-budget conversion voodoo magic.
 
My impressions:
1.       -Bluetooth (not a desirable feature for me) is flawless on Android and Windows Phones on the HA-1.
2.       -DSD played on Foobar -> USB/ASIO -> HA-1 -> Stax SRM323S/SR307s is breathtaking; simply amazing.
3.       -DT990 Pro 250ohm into the front HA1 phone jack is far beyond what I expected and experienced with TEAC, Marantz, Dragonflies and any soundcard.
4.       -The HA-1 has the power to EASILY drive 250ohm headphones without question. Nothing from TEAC could do this, Dragonflies struggled, and only Asus cards could come close to driving these headphones. The HA-1 drives them without flexing its muscles.
5.       -This can decode every DSD format/sample rate I have encountered.
6.       -The HA-1 remote can change songs in Foobar! Cool feature!

Nothing is perfect and here are the problems so far:
1.       -During the first 24-48 hours this HA-1 was literally too hot to touch; after a week it seems to be running slightly cooler (not sure how to explain this). In my opinion the HA-1 is still running too hot.
2.       -The driver(s) not “signed” causing warnings in Windows 10.
3.       -The front USB (for phones) simply does not work for a Galaxy Note 4. I have tried paid Android audiophile apps; I cannot get it to work.
4.       -If you play a movie in VLC with any type of Dolby audio over the optical it simply plays some sort of 1 second digital noise/static and then nothing.
5.       -Sometimes when changing songs in FOOBAR it will lock up and start screaming loud digital static; I have encountered this with Dragonflies as well. {I haven’t played around with too many settings and could really use some help with this}
6.       -I cannot get OPPO Digital support to respond to my questions
7.       -I am not able to detect quality improvements when playing back FLAC, MP3, WMA.
8.       -Oddly when trying to use the HA-1 as the audio device for games; it does not work. Specifically, GTAV and the NFS titles. All other windows sounds play.
9.       -There are problems running a mixed file format playlist in Foobar. DSD playback requires ASIO output and MP3 will not play over ASIO, so you must change the Foobar output to “DS: Speakers Oppo HA1” when you come across an MP3 in your playlist.
 
 
Overall I am truly impressed and happy with HA-1. I’m sure most of the problems are easily fixed with setting tweaks. 

 

[WayTooCrazy]

So, I'm still looking at this setup for my X-mas present. Is it worth getting? I'm on the fence now even more than before with the issues everyone is experiencing and having to send the unit back and the like. I'm sure the complaints I see here are the ones that speak out the most, as I'm sure the many who have it with no issues are less vocal. Like other's I'm sure, it isn't easy to part with this much "mad money" to not fully enjoy the unit. I'm coming from a Schiit Modi Uber to Schiit Vali 2, and want to make sure it is a solid upgrade (with few problems) before I make the jump. I also only have to pair (for now), the Audeze EL8-Open, Fostex TH-X00 Purple Heart and occasionally my Heir Audio 4.a CIEM. I think I like the Audeze sound, so I'm looking down the road to a future LCD-X/LCD-3 upgrade.

 

[Seth Warshavsky]

How it compare to the Hugo TT or the PS Audio Directstream?

 

[Allanmarcus]

  How it compare to the Hugo TT or the PS Audio Directstream?

The HA-1 is significantly less expensive.

 

[Dickies]

 
The HA-1 is significantly less expensive.

but does have a balanced headphone out, and a bunch of POWER!
 

  How it compare to the Hugo TT or the PS Audio Directstream?

 
I've not heard the tt or the ps directstream, but the hugo's dac was superior to the ha-1, maybe consider buying a hugo and feeding to the ha-1's amp section, I'd imagine that would be cheaper and more powerful than a hugo tt and an improvement on the ha-1

 

[Allanmarcus]

 

 
The HA-1 is significantly less expensive.

but does have a balanced headphone out, and a bunch of POWER!
 

  How it compare to the Hugo TT or the PS Audio Directstream?

 
I've not heard the tt or the ps directstream, but the hugo's dac was superior to the ha-1, maybe consider buying a hugo and feeding to the ha-1's amp section, I'd imagine that would be cheaper and more powerful than a hugo tt and an improvement on the ha-1

"Good" is a personal preference. The Oppo doc is analytical and revealing, so some call it a little bright and/or harsh. Only way you can determine if you like it is to listen to it. In all likelihood, most people couldn't tell the the difference between DACs in blind testing, but you might have sensitive enough ears to distinguish.
 
As for power and balanced output, it's slightly possible Oppo has a web page that discusses these fine points like basic features. Google is your friend.
yes, the oppo is fully balanced.
Power for oppo (balanced): 2400 mW into 600 Ohm 
Power for Hugo TT: 110dB SPL into a 300ohm headphone load
you will need to do the math to compare

 

[Bangkokphoto]

@WayTooCrazy
 
I am not sure what you are looking for in a DAC. For me I was simply looking to put my "toe in the water" of DSD. 
 
I've owned the HA-1 for 2 months now. I should have gone with the OPPO BDP-105D; same features as the HA-1 (slightly less money than the HA-1 here in Asia), and if/when I outgrow the device it could be re-purposed as MANY different things.It also seems like there are many "added" features from the owners community for the BDP devices as well.
 
Looking at my stack of digital audio garbage; 4 sound cards, 3 external DAC Amps + a headphone tube amp...what a waste.

 

[WayTooCrazy]

  @WayTooCrazy
 
I am not sure what you are looking for in a DAC. For me I was simply looking to put my "toe in the water" of DSD. 
 
I've owned the HA-1 for 2 months now. I should have gone with the OPPO BDP-105D; same features as the HA-1 (slightly less money than the HA-1 here in Asia), and if/when I outgrow the device it could be re-purposed as MANY different things.It also seems like there are many "added" features from the owners community for the BDP devices as well.
 
Looking at my stack of digital audio garbage; 4 sound cards, 3 external DAC Amps + a headphone tube amp...what a waste.

I think for me it was more of a lusted after the look and design of it. I guess I'll keep my eye out and pick up a Dac/Amp that is balanced that is well regarded (refurbished Benchmark Dac1 maybe) and go from there. I wanted the unit to be the center of my headphone/speaker setup for a small listening room.

 

[etc6849]

I'm loving my used Oppo HA-1 from ebay (for an awesome price)...  One clean sounding USB DAC and pre.  I have it going to an Emotiva XPR-2 amp (fully balanced diff amp) via XLR going into Klipsch Paladium P-17b speakers.  I'd post pics but it won't let me?!?
 
Ordered some Sennheiser HD800 headphones to hear on it.  I've never had any high end headphones, so not sure what to expect.  Any comments?  Should I have bought the Sennheiser HD800s instead?
 
I got them for $985 shipped with 60 day return policy, but they only came with the 10 foot phono cable.  They can sell me the HD800s (that has both phono and XLR-4 cables) for $138x.  Seems the 800s pricing is still too high, and I can't tell without having the headphones if the sound difference is worth a 40% price increase.
 
Is there any measurable difference when using the XLR-4 cable with the HA1 instead?  My initial understanding was that XLR-4 just separates the ground for left and right drivers of the headphones, but upon reading the specs it states:  1: L+, 2: L-, 3: R+, 4: R-, Shell: GND. 
 
Assuming the headphone amp is differential, seems I may hear a difference with the XLR-4 cable?

 

[Allanmarcus]

You will get significantly more power with the 4 pin XLR. Just look at the specs. for the HD800 a balanced cable is recommended. You should be able to get a balanced cable from the classifieds for $150 or less.