Harley Benton D-SEED

Took a punt on this, but really sorry I did. The actual sound in analog mode is very good and really does the Floyd style thing. Copy (digital delay) sounds thin to my ears, reverse is fun for all of 5 minutes, modulation.. I can kind of see uses for it. The real problem is : I've just received it and plugged it in to two different properly isolated, good quality power supplies, and even turned off I'm getting hum through the amp like never before. I have Wampler, EHX, Way Huge and TC products on my board, and none of them make noise like this. It's well built, but confusing to use, has 1 great sounds but 3 average/not great sounds... Not for me I guess, even though I recognise the build quality is there.