O2 AMP + ODAC

[adydula]

Lets please be careful and not go down the road of the designers reasons and past history... it will shut this thread down. Its not that I am not willing to chat about it but this is not the place.
 
There are other sites to do this on.
 
That said, I am glad AGDR has taken up the charge with the ODA.....there are very few people that I have met that really understand electronics design that have taken so much time to try to improve upon what the O2 designer was trying to do.
 
Alex

 

[Peti]

Maximum respect to the creator of the O2/ODAC! Also, the same goes to Head-Fi letting this thread going on considering the "prelude". Either way I have found a kind of balance by reading both sources. As usual, the truth is always somewhere in the middle. My first experience into hi-end headphones was through this site and I have found so much useful info here I can't tell from headphone reviews to how to customize my foobar.
 
Not sure if this was discussed before but I'm curious if the O2/ODAC can sufficiently run the HE-600 monster from Hifiman?
 
Any useful comments/experiences are welcome!

 

[Dark_wizzie]

Wut? HE-600s? Those exist?

 

[Peti]

Yeah, the new flagship of hifiman havent heard of it yet? just kidding, i meant the HE-6

 

[Dark_wizzie]

  Yeah, the new flagship of hifiman havent heard of it yet? just kidding, i meant the HE-6

Lol, Headfi profile view shows the posts I need to catch up on, and it cuts off at the latter half, so I was reading the preview of HE600s and going OMG WHAAATTT RLLY??? 

He-6 is very borderline and depends on how loud you listen, what tracks are played, and who's measurements you believe (hifiman vs Inner fidelity). My advice is if you want to power HE-6, get another amp or wait for the ODA which Mayflower is... slowly working on. The ODA will power the HE-6 without problem but also cost more. 

 

[Xenophon]

Maximum respect to the creator of the O2/ODAC! Also, the same goes to Head-Fi letting this thread going on considering the "prelude". Either way I have found a kind of balance by reading both sources. As usual, the truth is always somewhere in the middle. My first experience into hi-end headphones was through this site and I have found so much useful info here I can't tell from headphone reviews to how to customize my foobar.

Not sure if this was discussed before but I'm curious if the O2/ODAC can sufficiently run the HE-600 monster from Hifiman?

Any useful comments/experiences are welcome!

I own the HE-6 and an ODA. As was remarked, all kinds of numbers are circulating and kt depends on what you choose to believe reading those. I have the luxury of actually being able to try it and compare with my other amps, bypassing the theoretical calculations. Conclusion: no way is the HE-6 pfoperly powered by the ODA. I love the concept but it's not the ultimate amp solution for everything you can throw at it.

 

[Dark_wizzie]

I own the HE-6 and an ODA. As was remarked, all kinds of numbers are circulating and kt depends on what you choose to believe reading those. I have the luxury of actually being able to try it and compare with my other amps, bypassing the theoretical calculations. Conclusion: no way is the HE-6 pfoperly powered by the ODA. I love the concept but it's not the ultimate amp solution for everything you can throw at it.

The last time I crunched the numbers, with a worst case scenario, ODA is capable of powering HE-6.

 

[headwhacker]

I always hear people say when they are not satisfied how the headphone sound from a particular amp that it needs more power.

Just recently saw someone argued that grado phone @ 32ohm and 98 dB needs more than 200mW to sound nice

 

[Xenophon]

I know those numbers. My only reply is: hook it up to an ODA, then to some more powerful amps and compare. The difference is not subtle and it's not about sound coloration either. Try it, then come back and report. I'm all in favour of objectivity a d science but if you just trust your ears (or could somehow measure what comes out of the HE-6) then you'll conclude that apparently there's a problem with the model used.

 

[JacobLee89]

Is it possible that we are also ignoring inconsistency with Quality Control during manufacturing of the gear?

 

[Peti]

Thanks for the feedbacks! I guess at the end of the day I gotta give this combo a try one day to hear the results with my own ears..

 

[adydula]

Xenphon,
 
AGDR read your post on the ODA and your headphones.
 
He asked me to contact you and said you may need the 15volt rails to power the HE6's.
 
The lower 12.5 volt rails would drive the cans to 113db the 15 volt rails would drive them to 116db.
 
AGDR told me he would be glad to convert your unit to 15vdc rails if you would like.
 
Please let me know or contact him via a PM over at www.diyaudio.com.
 
NOTE: He is willing to do this at NO COST to you!
 
FYI
Alex

 

[Dark_wizzie]

113db is already ridiculous. I don't think Xenphon meant to say "Well I was hitting 113db peaks so my HE-6 didn't sound so well"...

 

[castleofargh]

  113db is already ridiculous. I don't think Xenphon meant to say "Well I was hitting 113db peaks so my HE-6 didn't sound so well"...

what they're not mini speakers?

 

[JacobLee89]

 
what they're not mini speakers?

 
A circular saw averages at 110Db.