I tried placing your op-amp in front of my headphone amp driving HD800 with a bypass switch. It is different. How different, well I can explain it in this way: You take an extremely beautiful girl to bed and experience awful sex. Then the next time you take an extremely ugly stuttering girl to bed and have great sex. Both objective and outcome are the same and both are disappointing but in different ways - so what are we looking for?
Dear Nico,
What I have is a vague idea of what TI have done in the OPA134, blame it on the whatever they have hidden that I dont know about 🙂
The choice of op-amp is flexible and what is really interesting is the amplifier.
Am talking 😉
Lets have great everything 😉 , beauty and awful are subjective .
Did more research on your setup and came across Product Review - HeadRoom Micro DAC and Micro Amp Headphone Amplifier.
So if you had a great time with the buffer. I expect the amplifier will blow you away 😉
Hi Onaudio, building an amp on a whim is not always possible, because there are so many other variables that will affect the outcome, the simulation proved interesting.
Thus it was a matter of trying your ideas on a similar topology rather than just simulating and viewing a graph trying to conclude whether subjectively it could sound good or bad.
I think this is where a lot of us go wrong, we simply try to draw conclusions from simulations.
Its performance is different, I cannot comment what part of different I enjoyed, the outcome was pleasing. But to conclude that it is the best I have heard would be unfair, one has to get used to the difference and listen to a lot of material before coming to any reasonable conclusion.
So it is best to leave the lights off, then you can be motivated by only performance.
Thus it was a matter of trying your ideas on a similar topology rather than just simulating and viewing a graph trying to conclude whether subjectively it could sound good or bad.
I think this is where a lot of us go wrong, we simply try to draw conclusions from simulations.
Its performance is different, I cannot comment what part of different I enjoyed, the outcome was pleasing. But to conclude that it is the best I have heard would be unfair, one has to get used to the difference and listen to a lot of material before coming to any reasonable conclusion.
So it is best to leave the lights off, then you can be motivated by only performance.
Thanks for the good work Nico. I am targeting at-least 20% of the about 200k members, to build this amplifier or the http://www.diyaudio.com/forums/solid-state/198500-symef-amplifier.html. For it to be a success 80% should give a favorable response, that's about 30k members 🙂 .
I am still waiting for pcb design volunteers. Well we have some way to go.
Thanks again
Sorry Onaudio cannot be of more help at this time. I am interested in learning about your algorithm predicting what is deemed acceptable and what not - can this be applied to other than audio scenarios.
Dear Nico,
The bag of treats am using is not unique to audio, but the feature selection is .
Hi OnAudio ,
Here is the full amplifier PCB even protection on board 🙂
Alex.
Here is the full amplifier PCB even protection on board 🙂
Alex.
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OnAudio, are you going to take your amp further, for example a builders thread, or will it end here? I vote that it has the potential to be a nice group project.
Thanks Nico, it matters a lot ,to me ,especially coming from a man ,as honorable and experienced as you ....... 🙂
All the best Alex.
All the best Alex.
Dear Nico,
Thank you. It is a wonderful group project. Alex has been kind enough to include defeat able speaker protection 😎 . Could this also serve as a builders thread or do I start another thread ?
There is a great likelihood that this amplifier out performs "The Very Best Amplifier I Have Ever Heard!!!!"😀
I agree, Alex is extremely good.
How does he do it so fast? It would take me months.
regards
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