MOTM

>and another part of my reluctance to purchase a 420 is that I've not found 
notch filters all that useful)<

>>Two filters in series in *Notch* mode emulate a 4-stage phaser. With a 
single filter (one notch) the effect is too weak for being recognized as 
phaser<<

And to add to this thread, since I bought an oscilloscope several months ago 
I was able to hook up two probes to the MOTM.  One before a filter and one 
after, which allows you to easily see the phase shifted output of the filter 
as you sweep the cutoff frequency around.  So when you mix the sound before 
the filter with the filtered sound and sweep the cutoff you get a phaser 
sound.  Now hook up a bunch of filters and create the ultimate custom 
phaseshifter.

-Elhardt