Since the last time I visited this site I have added these two boxes to the collection. A few of the best modern boxes I've heard. The DJ Tech and the Bumpboxx. My favorite thing about the DJ Tech is its ability to record in stereo onto SD or USB from any source. The bumpboxx will record off of line in and radio onto SD/USB (mono only). Both have their place and will run for 12 hours on a charge. The DJ Tech box has since been discontinued. Glad I acted on impulse with that purchase. A snazzy little box with quite a punch. The bumpboxx for when I want the house to shake