I really am very pleased with the Ampero
(A) ....but there is one really annoying thing about it - what the foot buttons do.
The 4th one is wonderful: it can be assigned to be turning on and off one or more of the elements of the patch. So on one patch it turns the compressor on/off, on another the distortion, etc. Having two buttons doing programmable like that would be fantastic. However.
On the smaller Ampero One there are only two other pedals, and with it you can go up and down through the patches.
On the bigger Ampero, though, pedals Nos. 1-3 go between the three patches of one "bank". To move up from one bank of patches to the next, you have to press foot buttons 2+3 at exactly the same time. This is rubbish. What a waste of space.
(B) The three little knobs under the screen on the bigger Ampero are very useful when tweaking the settings on patches – it's much easier to be precise with them than by changing levels on the touchscreen.* To someone who would prefer to program the patches on their computer, these will be unnecessary.
(C) I'm so glad to have the bigger Ampero's on/off switch. Don't know why it makes such a difference to me, but it does
*I presume on the smaller Ampero One which doesn't have the three little knobs, precise adjustment can be made by touching on the parameter, and then carefully turning the larger knob to the right of the screen.