Recently Furman introduced the next generation in power conditioning technology: Series II. All Series II units feature their revolutionary Series Multi-Stage Protection Plus (SMP+) circuit. Developed over a period of two years by a highly skilled team of engineers, the new circuit incorporates our exclusive Linear Filter Technology (LiFT) and Extreme Voltage Shutdown (E.V.S.), making it the most advanced power-conditioning system available. SMP+ can be found in all Series II and Power Factor units.