[sdiy] LM301 vs LM308 in feedforward compd filters

[Ian Fritz]

At 11:39 PM 8/3/05, Bob Weigel wrote:
>The 308 was developed as a 'tight spec' amp with very nice input design 
>having exceptional characteristics for a bipolar on offsets and input bias 
>particularly.  Naturally there are compromised aspects that result in 
>other areas and slew rate would be a logical one to suffer. They appear in 
>some old instrumentation circuitry but I seldom see them find use in music 
>applications though I have seen them a time or two. Trying to recall where.

They were used in many of the Enotes designs where low input bias current 
was needed.  This was before the FET-input devices (TL07x) were developed.