Filter type auto-wha analog memory and therefore no possible rglages. I bought the version for the effects loop but in fact it is only active when the active effect for the time so I do not find useful.
Just turn the knobs to change the sound ... Quickly found a use. Notice trs succinct but sufficient.
Analog effect so we can not do more natural.
I use this with a jazz bass
I use it for several months.
I love the vintage look and sound. the plastic buttons are not terrible all the same.