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O2 AMP + ODAC - Page 175

post #2611 of 3481
Deja vu?
post #2612 of 3481
Quote:
Originally Posted by MaciekN View Post
 

Would you guys think that analog crossfeed is a worthy addition to O2? If not, what else you'd wish it had?

I find crossfeed to work well with old recordings from the 60's that have everything panned hard right and left (A lot of Beatles recordings for example).Other than that I have found it has very little effect and can actually change the tone of the headphones. I have yet to find one that doesn't change the tonality, even if it is just very slight. 

 

I don't think there is anything I would add to the ODAC. For what it is (a fairly inexpensive usb dac) it is perfect. I guess it would be nice to have a spdif or coax digital input, but according to the designer it would have affected the performance and raised the price significantly.

post #2613 of 3481
It could be argued that that change in tone you hear when you use crossfeed is actually the music becoming more accurate. Most music (I think) is produced to sound good primarily through loudspeakers so adding this cross-channel information is meant to happen.
post #2614 of 3481
Quote:
Originally Posted by Zorrofox View Post

It could be argued that that change in tone you hear when you use crossfeed is actually the music becoming more accurate. Most music (I think) is produced to sound good primarily through loudspeakers so adding this cross-channel information is meant to happen.

That is an interesting way to look at it that I had never considered :dt880smile: 

post #2615 of 3481

Just got this...

 

Its the latest in what a desktop version of the O2 might have been:

(I will start a separate thread on this ODA V2.0 amp from agdr).

 

You can follow the details here:

 

http://www.diyaudio.com/forums/headphone-systems/229934-version-o2-desktop-amp-oda.html

post #2616 of 3481

Now THAT is interesting!  Nice to see agdr applying his considerable talents to an own design.  Will read through the thread at diyaudio although the technical details are way over my head.

post #2617 of 3481

Is the O2 AMP + ODAC the best value for money DAC/AMP on the market today?

post #2618 of 3481
Quote:
Originally Posted by pearljam50000 View Post

Is the O2 AMP + ODAC the best value for money DAC/AMP on the market today?
I have the O2 amp only. I have not heard many amps but those that I have heard lead me to believe that the O2 is the best £80 I have spent in audio.
post #2619 of 3481
Quote:
Originally Posted by pearljam50000 View Post
 

Is the O2 AMP + ODAC the best value for money DAC/AMP on the market today?

Depends on your budget and their ability to suit your purpose.  If you need to drive a Stax or a K-1000 or HE-6 then obviously they're not due to totally unsuitable.  If you're sitting on a 7 figure bank account then the spending of a large amount to get an incrementally smaller performance increase may well represent better value.

 

On a limited budget and with headphones that play nice with 'em they're hard to beat imo....speaking strictly sound wise and not considering connectivity etc.

post #2620 of 3481

So I recently got an LCD-2, and decided on Beta 22 to drive it.  Beta 22 trumps O2.  I realized that hard to drive headphones arn't O2 thing although iems sounded good.  I learned something from this.  Just because you find this in some blog with the designer claims it can do what more expensive amps can do, don't believe it until you do a comparison even though he shows his measurements(some values are useful but doesn't not tell you the whole story).  I mean every solid state measures well, so what makes some better that the others?  

 

When you only have the O2, you cannot know if it's really bad sounding amp.  After listening to my Beta 22, and went back to O2, I can hear bloating with O2.

 

I think the whole time what make the setup great was the ODAC.  I think ODAC truely is a great DAC.


Edited by SilverEars - 4/16/14 at 8:03pm
post #2621 of 3481

The ODAC/O2 appeared to be an outstanding value when it first came out. IMO it still is a good value. This device was made by its design engineer to make a point, that a good USB DAC/amp designed by the numbers can be made without the costly use of more advanced and complex technology, or costly components, bringing the cost well below competing devices. This adheres to the principle of KISS (keep it simple). This is a device that has its design process, implementation, and performance testing approaches fully documented for the world to see. So you know exactly what you are getting, which is not true for the many other devices out in the market. He published everything you need to know how to fabricate the amp part. You can also purchase it fully assembled with the DAC part by manufacturers who remain true to the design engineers wishes.

 

Given the whole package as outlined above, IMO this is a rather unique product, besides being a good value. But of course there are better more expensive units out there.  Its up to you to determine if the price difference for a more expensive unit is worthwhile. Double the price will only yield an incremental improvement in quality.

 

Just my two cents.


Edited by r010159 - 4/16/14 at 8:13pm
post #2622 of 3481

i've been using the O2 for about 2 years with a generic radio shack 1/8" right angle adapter(http://www.radioshack.com/product/index.jsp?productId=2103788).  it's been placing undue stress on the input adapter, right channel is starting to give out.  bummer. 

post #2623 of 3481
Quote:
Originally Posted by r010159 View Post

The ODAC/O2 appeared to be an outstanding value when it first came out. IMO it still is a good value. This device was made by its design engineer to make a point, that a good USB DAC/amp designed by the numbers can be made without the costly use of more advanced and complex technology, or costly components, bringing the cost well below competing devices. This adheres to the principle of KISS (keep it simple). This is a device that has its design process, implementation, and performance testing approaches fully documented for the world to see. So you know exactly what you are getting, which is not true for the many other devices out in the market. He published everything you need to know how to fabricate the amp part. You can also purchase it fully assembled with the DAC part by manufacturers who remain true to the design engineers wishes.

Given the whole package as outlined above, IMO this is a rather unique product, besides being a good value. But of course there are better more expensive units out there.  Its up to you to determine if the price difference for a more expensive unit is worthwhile. Double the price will only yield an incremental improvement in quality.

Just my two cents.
Good post. Says better than I could what appealed to me about the ethos of the O2.
It's true that I have not heard many amps but I have heard a couple.
All I do know is that I enjoy listening to my set up.
post #2624 of 3481
Quote:
Originally Posted by Porter1 View Post
 

i've been using the O2 for about 2 years with a generic radio shack 1/8" right angle adapter(http://www.radioshack.com/product/index.jsp?productId=2103788).  it's been placing undue stress on the input adapter, right channel is starting to give out.  bummer. 


undue stress? I am curious about this since I suppose even with the adapter, there isnt much weight stressing the port, right?

post #2625 of 3481
Quote:
Originally Posted by SilverEars View Post
 

So I recently got an LCD-2, and decided on Beta 22 to drive it.  Beta 22 trumps O2.  I realized that hard to drive headphones arn't O2 thing although iems sounded good.  I learned something from this.  Just because you find this in some blog with the designer claims it can do what more expensive amps can do, don't believe it until you do a comparison even though he shows his measurements(some values are useful but doesn't not tell you the whole story).  I mean every solid state measures well, so what makes some better that the others?  

 

When you only have the O2, you cannot know if it's really bad sounding amp.  After listening to my Beta 22, and went back to O2, I can hear bloating with O2.

 

I think the whole time what make the setup great was the ODAC.  I think ODAC truely is a great DAC.

What is bloating sounding?

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