The AC-215A compact power conditioner featuring Furman’s revolutionary SMP technology. Furman’s series multi-stage protection (SMP) circuit features our exclusive Linear Filter Technology (LiFT) and Extreme Voltage Shutdown (EVS). urman’s SMP surge suppression virtually eliminates service calls. Traditional surge suppression circuits sacrifice themselves when exposed to multiple transient voltage spikes, requiring the dismantling of your system, and repair of your surge suppressor. Not so with SMP. With Furman’s SMP, damaging transient voltages are safely absorbed, clamped and dissipated - no sacrificed parts, no service calls, no down time. Unique to Furman’s SMP is its unparalleled clamping voltage, even when tested beyond the grueling specifications of - USA/CIDA’s A-1-1 test. While other designs offer clamping voltages that are well above 300VAC peak (far beyond long accepted professional standards), Furman’s SMP clamps at 188VAC peak, 133 VAC RMS even when tested with multiple 6000VAC - 3000 Amp surges! This unprecedented level of protection is only available with Furman’s SMP technology.