[uzziah]

is this the standard soic ad8066? just wondering. are there "levels" of quality in AD chips such as Ti?

 

[thrice]

Yes, that's the one you want: Digikey part AD8066AR-ND I believe.

The difference is either package (AR for SOIC; ARM for MSOP) or for a lead free package (ARZ)

 

[Garbz]

If you are referring to sound then yes, AD make lots of different opamps just like TI. Some great for audio others are mediocre at best.

 

[tangent]

If you're referring to different grades of the same chip design, yes, ADI does that as well. I'm not sure there's a "B" version of the 8066, which would be the higher grade.

 

[ppl]

since low cost is one factor in the design of the AD8065 no b grade is available and if used in a PPA with Bass boost several should be obtained so as at leat two can go in the Left and Right channel with out alot of DC offset with Bass Boost on. I have seen DC offsets from 3 mv to 65 mv with this opamp in the same ppa so i allways select for lowest DC offset and them match a pair for the right and left channels. The wors spec AD8065 available still only give 0.002 mV DC offset worst case in the ground channel. a selection of 6 should allow two with low DC offset and 8 enought to get a match set of two