AD797 in preamp: need help

TB · 9th September 2010, 02:07 PM

Hello,
Few years ago I was able to audition Norh ACA preamplifier build around AD797 / BUF634. The sound of the preamp was really good. I have decided to get these opamps and try to build my own. Since I am beginner in electronics I searched the forum for available circuits, but with no avail. Instead, I have found many threads with information how difficult this chip is to work with.
Also, quality of the sound, if correctly implemented, was mentioned too. I am not able to design the basic circuit by myself. Can anyone point me to available schematic?
I did check AD797 data sheet, but only one schematic with buffer is shown there ( please look at page 16. They use AD811 buffer ):
Data sheet: http://www.analog.com/static/importe...eets/AD797.pdf
I am not sure this circuit can be used as a preamp..
What I intend to do is to build norh ACA like preamp with discrete diamond buffer or BUF634.

Thanks for the help.

AndrewT · 9th September 2010, 03:59 PM

Hi,
you don't let us access your Email nor PM.

I think you should move this enquiry to Solid State or to Analog Line Level

TB · 9th September 2010, 04:12 PM

Hello AndrewT,
Hmmm, I thought my info is visible to all. i will check.
I will post that question on mentioned by you forum

Thanks

9th September 2010, 02:07 PM	#1
TB diyAudio Member Join Date: Jun 2004 Location: Northern VA	AD797 in preamp: need help Hello, Few years ago I was able to audition Norh ACA preamplifier build around AD797 / BUF634. The sound of the preamp was really good. I have decided to get these opamps and try to build my own. Since I am beginner in electronics I searched the forum for available circuits, but with no avail. Instead, I have found many threads with information how difficult this chip is to work with. Also, quality of the sound, if correctly implemented, was mentioned too. I am not able to design the basic circuit by myself. Can anyone point me to available schematic? I did check AD797 data sheet, but only one schematic with buffer is shown there ( please look at page 16. They use AD811 buffer ): Data sheet: http://www.analog.com/static/importe...eets/AD797.pdf I am not sure this circuit can be used as a preamp.. What I intend to do is to build norh ACA like preamp with discrete diamond buffer or BUF634. Thanks for the help.

9th September 2010, 03:59 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, you don't let us access your Email nor PM. I think you should move this enquiry to Solid State or to Analog Line Level __________________ regards Andrew T.

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9th September 2010, 04:12 PM	#3
TB diyAudio Member Join Date: Jun 2004 Location: Northern VA	Hello AndrewT, Hmmm, I thought my info is visible to all. i will check. I will post that question on mentioned by you forum Thanks

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