quad OP-amps

[jbv]

>  I don't usually like quad op amps and 
>almost never use them despite there being cheaper per op amp and you 
>can make tighter pc boards with them.  One argument against them is 
>crosstalk and the power supply  coupling signal between them.  82's 
>are more appealing to me because it leads to more related signal on 
>the same IC and adds better power supply decupling (more) than do the 
>quads. 

Agreed.

But on the other hand, quad ops are very usefull and save lots of
space on PCB in the case of filter banks, like in vocoders.

jbv