I've used this with Novations, Rolands, Yamahas, Korgs, DSI synths and Millenium-branded keyboards.
It worked perfectly with all of them and I've never had any issues with it (I think I've had to use the polarity switch on the back with some of them, well done Lead Foot for including a polarity switch!).
I currently use it as a STOP switch with Ableton Live (via a DSI Mopho SE), using it to stop loops and clips at the end of songs, so I stomp it pretty hard. Because I'm abusing it, I bought a spare, just in case.
It's an all-plastic body so it feels flimsier than a metal pedal, but it's put up with years of abuse from me, and there's hardly a mark on it (and I wear UK 12 boots onstage).
In summary: functional, inexpensive and impressively durable!
I purchased an Impact GX49 midi controller and wanted a sustain pedal for my home studio applications. I was on a tight budget so I settled for this. It is relatively well constructed. With a suitably long cable. It is very light and moves a lot under your foot. So you may find you have to tape it down or something. Especially if you have wooden or tiled flooring. But this thing does its job. Its very responsive. Overall for the price you can't expect very much. But for the price, good value.
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