Well, you started out complaining about a 741 model. I'd call that
a very rare, obsolete part: I haven't actually seen one in a
circuit in over 30 years. I guess it's still in textbooks (read
Stephen J. Gould's rants about textbook authors' tendency to copy
from previous textbooks sometime), but why would anyone use it in a
new design?
Very rare?! I see 741s everywhere. WTF?
Sorry to bust the bubble, but he's right. The 741 is well over 40
years old,
and its open loop first response pole, where the 6db per octave
rolloff
begins, is a measly 10 hertz. Today there are $1.00 opamps with a
working
gain of 20 when feedback is applied, with output slew rates of several
thousand volts per second. Thats working bandwidth to several hundred
megahertz at the sort of levels found in either a modern broadcast
audio
mixer, or a production video switcher, and either of those are
driving 60
ohms for audio, or 75 for video.
Slew rate limits alone in the 741 means you can't honestly ask it
for more
than a volt of output at full audio bandwidth. At 3 volts the slew
rate
distortion is so bad even these 75 year old ears can hear it. Even
a TLO-72
or 74 can mop the floor with a 741, and output a +- 15 volt rail to
rail
signal doing it, but into the old 600 ohm std load.