WTPA is an an SRAM based 8-bit audio sampler, designed in kit form. It's designed to the following aesthetic goals: to capitalize on the audio flaws and interfacing ability that relatively powerful and perfect computer samplers could but usually don't. To do noisy, awesome things that proletariat guitar garbage like the Line-6 pedals never will. To be a top-flight uncompromising, un-crashing piece of open source engineering that is more reliable than an MPC.
The WTPA kit is designed for the determined kitbuilder who really, truly wants to learn more about how electronics work and how to get better at their craft. It is not the easiest kit ever, but for what it is I feel it's versatile and powerful and (I hope) cool. And it comes with a thick manual.