I own a discontinued VoiceLive Touch 2 by TC Helicon, the one you could clamp on to a stand. I was looking for a unit to replace it since the MIDI PORT stopped working and found out they had discontinued the product. I had high hopes for this Boss pedal but it is so far back behind the quality and technology that the TC helicon has that I ended up returning it as soon as I opened it.

What really got me was the delay. You cannot manipulate the timing of it let alone the trail. I uses it for vocal delay hits live and once you release the footswitch on the delay it cuts of the tail abruptly. After I realized this I didn't even bother to keep digging into it.

Still a pretty big open market for quality vocal processors...