As a modern redesign of the iconic boom box of the 1980s, the iP4 audio system combines yesterday’s look with today’s technology. Beneath the rubberised surface, the device features specially designed carbon fibre woofers, a highly efficient class-D amplifier, and digital sound processing developed and licensed by SRS Labs. Additional features include a magnetically attached remote control, a five-band graphic equaliser, and an output-level indicator.