Originally Posted by: BlackheartsMy question is what effect will sustain a note with slow decay on any multi effect pedal?

Fun thread!

It's been implied but not stated outright: the one very important way to provide sustain is volume. Lots of raw power & volume.

And in this case the less distortion, fuzz, compression, or overdrive the better. Plug into any decent tube amp, turn the guitar volume down & the amp all the way up. Play an open string & start to turn up the volume knob.

What you're looking for is the spot at which the note sustains, but doesn't squeal out or degrade into feedback. If you add a little bit of overdrive or gain or reverb, delay into this mix, you'll have sustain for days.

I've seen beginners make the mistake of thinking that a pedal or effect is going to replace the result of what is actually only possible with sheer volume.

It doesn't really even take a huge amp! You can get a 10 or 20 watt amp to ring with beautiful feedback sustain, but you've got to open it up. :)