Excellent.
I use it as an expression for the Analog Four by Elektron.
On this particular synth, you can assign up to 5 parameters to it and by doing so, it has changed my entire playing.

Excellent build quality and absolutely reliable so far. I have been using it for almost 2 months, I will write a late review as well but so far it is exactly what I needed.

The pedal is amazing. Solid construction quality and feel. Regarding its durability, I will wait a few months and come back. It is worth noting that it can also be used as a sustain pedal, with gradual effect, if inserted into the appropriate slot.

For the price, it is excellent. There are other plastic ones made around 50, this one works flawlessly, compatible with anything I connected it to (midi keyboard, as an expression in a multi-effect as volume or wah, in a delay pedal). Although it looks fragile in the photo, it is very durable, and due to the material, it is also very lightweight despite its full size

I bought it because it was only 17 euros, so even if it's bad, I wanted something that would last a few months. It's much better than I expected. Very sturdy and the right (meaning large) size - I can see it lasting for years if the cable doesn't break. I use it as a wah (I connect it to the midi in of my sound card) with plugins. It's definitely not the smoothest pedal on the market in terms of mechanics, but I don't think that affects anything. I highly recommend it.

Very good and cheap pedal, you can connect it to any keyboard or MIDI controller as long as it has an expression and sustain input. Also, with a MIDI adapter, you can control whatever you want

Very good and lightweight pedal, compatible with everything thanks to the polarity switch it has. It is not as sensitive as it may seem. I have used it live as both a volume and a wah. Highly recommended.