[sdiy] Painting up the ugly LM324 for yet another prom.

[Jim Coursey]

 On Thu, 30 Jun 2011 18:56:42 -0400, Scott Nordlund wrote:
>> >If you have an audio circuit using the LM324, sound quality
>> >can be improved a lot by conencting a 6.8K resistor between
>> >the output and the negative supply. This biases the class B
>> >(no, not class AB) output stage into class A and the open
>> >loop distortion drops by a huge amount.
>
> That's usually a slightly dubious and often-misapplied analog
> designer and "audiophile" trick. But when you're dealing with
> the LM324, I don't think you have to worry too much about
> accidentally making things worse.

 I've read the same thing about the 4558 and NJM2068 but have never 
 tried it.