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foo 26th October 2004 12:45 PM

Ad8610 Ar Vs Ad8610br
Is there a big improvment in sonic quality that worth the doubled price ?

what's the difference ?

peranders 26th October 2004 01:02 PM

If you check the datasheet this is only about DC parameters and the "bad" AD8610 is extremely good in this sense :nod:

Short answer: None. :no:

If you are planning to use it I can also say congratulations. I have it in my Industrial Gainclone and it is an excellent buffer and DC-servo.

Roushon 26th October 2004 01:32 PM


Originally posted by peranders
I have it in my Industrial Gainclone and it is an excellent buffer and DC-servo.
I am curious to know if it is possible to make the buffer and the DC-servo using NE5532. I want to know because I have NE5532 and it is difficult for me to get AD8610.

peranders 26th October 2004 03:43 PM

NE5523 will work but with less good DC performance but for a power amp it's perfectly alright. The only thing you ought to think about is that the bias currents are rather high. If you are going to do exactly as I have done in my Gainclone and you experience too much offset you can reduce this by having the same DC-resistance on both inputs. The + input must have a resistor
to ground with the same value as R17. Note also that you might also need to decouple this input with a 100 nF in parallel of the resistor.

If you are going to use the opamp in exactly the same application as my Gainclone you can use any good audio JFET opamp and any good BJT audio opamp with the possible need for this extra resistor.

Roushon 27th October 2004 05:55 AM

thank you
Hi Peranders,
Thank you very much for your informative reply. I think I have to use NE5532 and your Gainclone design was in my mind when I wrote. I will use your circuit as a guide.


foo 27th October 2004 06:02 AM

thx for your reply

it seems there's no need to buy an ad8610br instead of ar :(

peranders 27th October 2004 07:55 AM

Exactly, it not always more expensive is better.

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