Based upon JBL's latest design language -- the weave -- On Stage IV ($150) is one of two new portable audio systems from the company, and a sequel to the popular series of four-driver On Stage systems that have come before. Now powered by a wall adapter or a big set of six AA batteries you supply yourself, On Stage IV has a distinctive illuminated crystal dock atop a black glossy and silver metallic base that looks like overlapping, weaved arcs, with…
