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Old 9th September 2010, 02:07 PM   #1
TB is offline TB  United States
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Join Date: Jun 2004
Location: Northern VA
Default AD797 in preamp: need help

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:
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.
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Old 9th September 2010, 03:59 PM   #2
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
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.
Sent from my desktop computer using a keyboard
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Old 9th September 2010, 04:12 PM   #3
TB is offline TB  United States
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

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