UAF42 how does it do in real live?

Theo t.hogers at
Fri Mar 31 21:26:30 CEST 2000

Just considering it as a option .
Need a fixed filter behind a 20bit audio range ADC.
BB said I should take a look at it, found it rather pricy indeed.
How well are the opamps? better than 072 I hope?
If it only saves 2 caps on the print, its not worth $15 to me.
If the amps are really!! good I might consider it for an other (more high
end) project comming up next year.

It comes with a filter disign program (handy as I confessed earlyer: my math
is crap).
Did not get the full documentation yet, but the program turned out to be a
universal tool not just UAF42.

Cheers Theo

----- Original Message -----
From: patchell <patchell at>
To: Theo <t.hogers at>
Cc: <synth-diy at>
Sent: Saturday, April 01, 2000 4:29 AM
Subject: Re: UAF42 how does it do in real live?

>     That all depends, what do you want to use it for?
>     At $15 each, this is a pretty pricey item for what you get.  It is
> just a simple state variable filter as I recall, you would be better off
> using a pair of TL072's and some polystyrene capacitors and some 1%
> resistors.  That way, you can do the same function for about $1.50.
>     -Jim
> -----------------------------------------------------------------
> Visit:
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