[Arny Krueger]

"Eeyore" wrote in message
...


Arny Krueger wrote:

The 4558 that Trevor decries is even widely used in professional gear
that
is highly regarded.

No it *isn't* Arny. At least not in any respectable kit.

I guess you'd be amazed where I've found them.

The 4558 ( originally Raytheon's 1558 ) is no more than a dual '741 class'
op-amp.

That was the 558.

The NJM 4558 that is currently used is a far different chip. It does things
that the orgional 4558 could never do, like swing +/- 12 volts at 30 KHz.

The only pro gear I've normally seen it in is low-end budget Asian kit.
Notably DJ gear.

It shows up in more highly-regarded places.

Even the modest change to the 4560 provides very real benefits.

A better device for many apps, true.

However, DVD players with 4558 line drivers don't seem to have any technical
or audible failings because of them.