hoe accurate do you need - post#1 here:
http://www.diyaudio.com/forums/showthread.php?s=&threadid=45794&highlight=
is likely to give unmeasurable audio frequency distortion
http://www.diyaudio.com/forums/showthread.php?s=&threadid=45794&highlight=
is likely to give unmeasurable audio frequency distortion
ACTIVA said:
Thanks Max,
Since I will be buying just a couple, price is not a factor where I have spent over $200 in upgrades already.. don't want to screw it up by saving a few cents and making the effort less rewarding.
How would you compare the sound of the OPA2604, 2134 and 2107?
By the way how's the AD979?
OPA2134 is a fair price and very good audio op.
Unity gain, non-inverted or inverted
and the distortion will be practically zero.
With a good normal regulated dual voltage supply.
+-15 Volt is the recommended.
OPA2134 has several useful features,
that contributes to make it the main stream audio op of today:
- It is stable in unity gain.
- JFET input. You can use higher input impedance input resistor, if you like.
- OPA2134 has good high current output for driving lower loads.
- Easy to find most everywhere. You can compare price from many dealers.
- Buy at least 10 pcs and put in your good-to-have-at-home shelf.
For a unity gain line level buffer, I can't see any problems selecting an operational amplifier.
Several other more simple op-amps, would do very well at gain=1.
This is the most easy job, at least with reasonably normal input impedances
and normal load impedances.
This is also why a single transistor follower can do this buffering
many times with as low distortion it is hard measure.
It is when task is voltage amplification, say >=5 and maybe x20-100,
when we can start bothering and try to find the most suited op-amp.
lineup
Unity gain, non-inverted or inverted
and the distortion will be practically zero.
With a good normal regulated dual voltage supply.
+-15 Volt is the recommended.
OPA2134 has several useful features,
that contributes to make it the main stream audio op of today:
- It is stable in unity gain.
- JFET input. You can use higher input impedance input resistor, if you like.
- OPA2134 has good high current output for driving lower loads.
- Easy to find most everywhere. You can compare price from many dealers.
- Buy at least 10 pcs and put in your good-to-have-at-home shelf.
For a unity gain line level buffer, I can't see any problems selecting an operational amplifier.
Several other more simple op-amps, would do very well at gain=1.
This is the most easy job, at least with reasonably normal input impedances
and normal load impedances.
This is also why a single transistor follower can do this buffering
many times with as low distortion it is hard measure.
It is when task is voltage amplification, say >=5 and maybe x20-100,
when we can start bothering and try to find the most suited op-amp.
lineup
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