The Ampero Press works regularly as a normal Volume pedal, with one Input and one Output, to control your signal volume. There’s a 1/4″ TRS Expression jack here as well, though, which lets you hook the Press up to any pedal or multi-effect that functions with an external expression pedal. The great thing here is that you can use Ampero Press for both Volume and Expression control at the same time, which can lead to some interesting musical adventuring.
When using Ampero Press with the Ampero or Ampero One units, you can control up to 4 modules at the same time, with different percentages of expression for each one. These settings are all accessible via the global functions onboard, and allow for complete personalized control over your sound. You can control percentage of change (upper and lower limits) and type of curve (linear, log. etc…) as well, if you so choose. Its small size makes it an ideal candidate for any pedalboard, too, fitting right in with your current setup.