RBH Series cabinets, introduced in 1998, were the first to be equipped with GK's unique Horn Bi-Amp System. This flexibility combined with the series' extreme punch and clarity make them a favorite among professional players who require greater power and definition in their tone. Their unique shape allows the cabinets to be played upright, stacked or tilted back like floor monitors. All models feature heavy duty cast-frame woofers, high quality horn, black carpet, recessed, spring-loaded handles, rugged steel grill, custom interlocking corners and 11-ply poplar construction. The 410RBH and 115RBH include nickel plated removable castors.