[NagysAudio]

Hi,

     This is the absolute best OP amplifier circuit that I have ever heard! It can be used in amplifiers or preamps alike.

In amplifiers, this dual jfet input stage would be followed by a bipolar voltage stage and a mosfet output. (2sk134 and 2sj49)

The amplifier could have an extremely high frequency bandwidth and high slew rate, i.e. DC-500kHz at +/- 1dB.

Below is the schematic of the OP amp circuit as well as the entire amplifier. Let me know what you all think!

Here is the OP amplifier module:

http://i189.photobucket.com/albums/z105/invictus005/OPAmp.jpg

The input and voltage stage:

http://i189.photobucket.com/albums/z105/invictus005/scan0002.jpg

Output stage:

http://i189.photobucket.com/albums/z105/invictus005/scan0001.jpg

Norbert

[Occam]

Hi,

     This is the absolute best OP amplifier circuit that I have ever heard! It can be used in amplifiers or preamps alike.

In amplifiers, this dual jfet input stage would be followed by a bipolar voltage stage and a mosfet output. (2sk134 and 2sj49)

The amplifier could have an extremely high frequency bandwidth and high slew rate, i.e. DC-500kHz at +/- 1dB.

Below is the schematic of the OP amp circuit as well as the entire amplifier. Let me know what you all think!

Here is the OP amplifier module:



The input and voltage stage:



Output stage:



Norbert

Norbert - If you hit 'Quote' on my post, you can see what was done to show the images directly. It makes it a bit more acessable to people.

[art]

REALLY!!!!!!!!!?????????

I would think that the "best in the world" would at least use the right schematic nomenclature for a JFET.

But what do I really think about it?

Calling any circuit the best in the world is pretty silly. Especially one that uses a low transconductance JFET.

(Hint: Try some Toshibas. Maybe then we can decide if it is even "state of the art".)

OK.........smack me for being a wizaguy.

Pat

[john curl]

This is a good effort, but it is about 30 years behind what we do today.  Think of a 30 year old 'muscle car'.   

[KCI-JohnP]

Ok... first we had "the best capacitor in the world".....
Then it was "the best speaker damping in the world"...
and now we have "the best OP amp in the world"...........

[NagysAudio]

Hi Mr. Curl,

     I couldn't agree more with you. It's certainly a fairly old circuit, but a no nonsense circuit. And it certainly makes for a wonderful sounding amp. Maybe like a Ferrari Testarossa?

Norbert

[NagysAudio]

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