Memory may be vanishing, phones and laptops may be getting downgraded specs. But we’re enjoying an unexpected renaissance of mobile samplers. And of all of these, Casio might pack the most fun into a single package. The SXC-1’s Japanese preorder was announced and sold out this week, and with good reason: this looks like the most fun we’ve had with Casio since the 80s and 90s. This is about more than just the legacy of the SK-1 sampler and the Sleng Ten-inspiring Casiotone MT-40 — though Casio has given those devices a nod by packing in preset content from both. This promises a return to Casio, the dazzling electronics maker full of weird, wonderful ideas. This is the company that turned a calculator into a lighter , developed consonant-vowel synthesis , and made a watch that did, well, this: So when we talk about Teenage Engineering or Ableton Move, those have some Casio DNA in them, sometimes intentionally and sometimes through osmosis — even, I’d argue, the new MPC Sample.…