I found mine through a quick search on eBay, but I also suggest browsing the other Marsona sound machine options as there are some very cool ones. Happy hunting! :) p.s. the surf range/rate knobs are not really like an LFO as i said exactly, I think I was thinking more along the lines of general oscillation/pulsation but oh well, I'm always just saying what the hell ever in these videos anyways.