[miceblue]

Has anyone in this thread with a Mac with USB 3 ports or Mavericks encountered any problems with their ODAC? I recently got a new iMac and have been experiencing glitches and pops on the oDAC (which works fine when plugged into a Win 8 computer). I exchanged the iMac for a new one hoping it was a hardware issue, but the new one gets glitches as well. :/

It's probably a problem with Mavericks actually.

Mavericks has really trashed my audio IO. Just getting things stable again...

Yet another reason to not upgrade. XD

 

[Ashade]

Yet another reason to not upgrade. XD

 
LOL. Nice to know, I will be holding the upgrade for a while.

 

[austonia]

+1 joining this club with a Mayflower O2+ODAC combo (rear power jack, low gain option)
 
not the newest or shiniest model but it'll do for a transportable unit i can take to work. replacing a Soundblaster MP3+

 

[adydula]

You can read about why an AC to AC adapter is used on the designers website under the O2 Design Process area. We cant provide u the direct link here.
 
Basically there are several choices, but take a look over there and if you still dont understand why you can PM me.
 
Thanks
A.

 

[austonia]

  You can read about why an AC to AC adapter is used on the designers website under the O2 Design Process area. We cant provide u the direct link here.
 
Basically there are several choices, but take a look over there and if you still dont understand why you can PM me.
 
Thanks
A.

 
Appreciate your offer. I looked at design process but it's over my head. What I understand is, it's best for this design, and there's good science behind that. Good enough for me.

 

[adydula]

Many of the AC to DC adapters have noise issues and one way to get rid of that is to go with a AC to AC adapter, and do the AC to DC conversion yourself.
 
Many people think that AC power is "dirty or bad" and go thru some fairly expensive "solutions" to clean up or minimize their perceived beliefs that AC power is an issue etc....long debates....LOL.
 
The neat thing with that is all you have to do is run the O2 amp on batteries alone, NO AC, no ripple, no possibility of noise from the power source...just PURE DC, exactly what the doctor ordered.
 
With a simple unplug of the AC adapter you can see for yourself if there is any impact on running with the AC adapter or just with batteries (Pure DC).
 
The designer has measurements with AC power on his site...and they are exceptional.
 
Another reason why this little amp is such a marvel....
 
All the best
Alex

 

[stv014]

The main reason why the O2 uses an AC-AC adapter instead of an AC-DC one (which are more common) is that it needs a dual +/- 12 V power supply, and that is not possible with most AC-DC adapters without using a rail splitter/active ground that the designer wanted to avoid. With AC power input, it is easy to create a dual DC power supply using two simple half-wave rectifiers.

 

[MrMateoHead]

All I want now is for someone to do a Full-On O2 Desktop Amp. Seems this product is definitely dead in the water for whatever reason.
 
1/4 and 1/8 jacks x 4 (yes, let it run at least 2-pairs for you and a friend)
 
1-3 watts max output
 
Keep the battery power for power outages? Lol. If there is a battery(ies) some kind of 'low charge' warning.
 
Variable Gain
 
1/8 in / RCA in
 
Better cable management
 
$200 or so (preferable less).
 
Done, I'll take three.

 

[mcandmar]

Add to that the approach of integrating the AC-AC transformer inside the enclosure would have created issues of shielding the noise from the sensitive electronics inside the case.  Not to mention the can of worms of various safety type approvals in order to sell the product in various markets, an external AC transformer was the easy cost effective solution.
 
I actually went a step further and created my own little power supply box with a small toroid to feed mine, total overkill but hey why not..

 

[adydula]

mateohead...if you haven't already check out the DIYaudio site under headphone amps...lots of discussion and updates to the O2 good or bad depending on your view...
 
AGDR is a person that is leading the way over there now for this amp...
 
FYI
 
Alex

 

[austonia]

.

 

[adydula]

Yup.....u can get the ODAC and the batteries in a case, but the small original case makes this a challenge...but it can be done.
 
or get a larger case...
 
or be happy with what you have got!!
 
Its pretty darn good!
 
Alex

 

[austonia]

.

 

[evilsync]

What are peoples thoughts on using o2+odac combo to drive Beyer T90's and EarSonic SM64's?
 
I've been doing some googling and haven't quite found an answer - but wasn't there meant to be a ODA (desktop amp), whatever happened to this concept?
 
Cheers fellas.

 

[adydula]

I use the O2 and ODAC with T90's all day long....
 
one word "EXCELLENT"...
 
Alex