A setting on my toy keyboard called "pearl drop" shifted two octaves down (shifting this far down made the sound just start to break up in a glitchy sounding way).
This came from the cheapest looking keyboard i've ever seen, yet it had really good features for sampling, plus a mike in that makes for some really, really, really cool distortion.
Original drum sample recorded straight from an original vintage yamaha psr-36 digital synthetizer from 1988. Best quality you can find online. Also, some samples aren't half bad. Use creatively and add some fx's. No eq or fx. Just some denoising.