I used to control a preamp presets PSA1 and gmajor just to change the sound banks live

very effective scene especially with the two expression pedals, you can assign control vloume and the effects on the other

Against by means of a buzz when the power is on but not annoying when playing. It is updatable by eprom.

It is metal (ie solid), changes are fast patches with 10 presets per bank

The price / quality ratio is excellent compared to other brands or types rolaand yamaha example ....

I use actuellemenet in spare pedal if my POD PRO fails ....... So he sleeps in a cardboard box!!