The Tech 21 Richie Kotzen Fly Rig RK5 bears many similarities to Tech 21's original Fly Rig in that it's a multi-effects unit with a powerful SansAmp modeling circuit, characteristic of many Tech 21 products. The Richie Kotzen Fly Rig RK5, however, swaps the basic Fly Rig's Plexi circuit for Kotzen's signature OMG overdrive circuit, lending one more effect to the slew of reverb, boost, and other effects contained within the RK5's incredibly compact housing.