4558 replacement (WAS: [sdiy] 4136??)

[Antti Huovilainen]

On Thu, 15 Mar 2001, Martin Czech wrote:

> Just a few comments to the swapping IC business:
> 
> I had a look into IC OP AMP genealogy yesterday.
> 
> 741,101,1458 are NPN diff input stage, two stage devices.
> A/B class output stage.
> Very similar.

Speaking of which, is there anything special to 4558 (as used in MXR
Bluebox, http://www.compassnet.com/~cjlandry/schems/bluebox.jpg) or should
I just read it as "a dual 741 which is a bit faster and has higher output 
current limit" and use a TL072 as a subsitute.

Antti

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 How can you have any pudding if you don't eat yer meat!?"
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