I used to dub with one of these (PE603T) back in the eighties. It was awesome and sounded nothing like a Space Echo. A friend ended up with it and told me a couple of years ago that it had been put in a skip in full working order back in the late nineties! He was shocked when I told him how much they go for now…
if you can find one now get it. They are fantastic for dub reggae.