Turbocharging the World"s Most Popular Portable Sampler. Roland"s acclaimed SP-404 performance sampler takes an exciting leap forward with the new SP-404SX. In addition to the fun, fast, hands-on features of the original, the new model offers enhanced sound quality with pure 16-bit linear sampling, improved DSP effects, smooth FX switching, a more versatile pattern sequencer (with a new shuffle feature), and easier data management with SD-card compatibility. It"s a creatively stimulating, powerful tool for DJs, musicians, producers, and live-sound engineers who trigger jingles.