AD8610 and AD8620 are coming strong.
OPA627/37 is also a very good choice but I think OPA134 is the most price worthy right know but most hifi for the money is still NE5534, 30-40 cents!
I think AD8610 looks very interesting. I have already got samples and I can't wait to test it in my SMD headphone amp.
http://www.diyaudio.com/forums/showthread.php?postid=137805#post137805
http://www.diyaudio.com/forums/showthread.php?s=&threadid=11725
OPA627/37 is also a very good choice but I think OPA134 is the most price worthy right know but most hifi for the money is still NE5534, 30-40 cents!
I think AD8610 looks very interesting. I have already got samples and I can't wait to test it in my SMD headphone amp.
http://www.diyaudio.com/forums/showthread.php?postid=137805#post137805
http://www.diyaudio.com/forums/showthread.php?s=&threadid=11725
There is no way to say "best" without qualifying your criteria. I am not made of money, and although I really like the sound of the OPA627, it is foolish to pay that kind of money for little gain over several very good opamps that are available for a mere fraction of the price (5532/34, 604/2604, et. al.)
Bang-for-the-buck-wise, the OPA604/OPA2604 is tough to beat (especially if you can get a supply voltage of +/-20V or so). If you have deep pockets, buy a 627/637 and fuggetaboutit.
Bang-for-the-buck-wise, the OPA604/OPA2604 is tough to beat (especially if you can get a supply voltage of +/-20V or so). If you have deep pockets, buy a 627/637 and fuggetaboutit.
Op-amps
Depends a lot upon application, but the following general purpose, high performance devices are good all-rounders.
AD825 - cheap, easily available, stable
AD8610 - Best sound I've heard in my headphone amp
AD8620 - Dual version of above, almost no performance degradation over above, but good thermal tracking, which can be very useful
AD8065 - Very fast, and well behaved device, exceptionally good for driving high capacitance
THS4271 - very fast, ultra low noise, narrow supply range
Depends a lot upon application, but the following general purpose, high performance devices are good all-rounders.
AD825 - cheap, easily available, stable
AD8610 - Best sound I've heard in my headphone amp
AD8620 - Dual version of above, almost no performance degradation over above, but good thermal tracking, which can be very useful
AD8065 - Very fast, and well behaved device, exceptionally good for driving high capacitance
THS4271 - very fast, ultra low noise, narrow supply range
That's a useless question; it's like asking, "What is the best car?" If you want to haul around a couple of kids, you'll have a different answer than someone who wants to get around a track as fast as possible.
You have to specify what you're going to use the op-amp for in order to select a "best" one. It's a basic rule of engineering, but one I see ignored a lot: The first step is to define the problem.
You have to specify what you're going to use the op-amp for in order to select a "best" one. It's a basic rule of engineering, but one I see ignored a lot: The first step is to define the problem.
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