On Stage 400P is part of a 2008-vintage family of JBL speaker designs that all bore the same shape—think of the base of a thinner, gently curved pyramid with the top point and middle cut off—but differed in components. All were made from black plastic with silver fabric speaker grilles and silver top buttons. The least expensive model, Duet 200, was identical to the On Stage 200ID save for On Stage’s centrally-mounted iPod and iPhone…
