Furman P-1800 AR Advanced Level Voltage Regularor/Power Conditioner, 15 Amp, Regulates 97-137 Volt Input Range to 120 Volt Output True RMS Voltage Regulation delivers a stable 120 volts of AC power to protect equipment from problems caused by AC line voltage irregularities Furman's exclusive SMP technology provides the highest level of surge & spike protection available; Lift offers AC power filtering to ensure clean power for unequaled audio & video clarity Advanced EVS circuitry detects dangerous voltage irregularities and safely powers down itself and connected equipment in unsafe conditions Front panel USB convenience outlets allows you to charge most media devices or power a USB lamp. From the #1 brand in professional power conditioning. Perfect for instrument rigs, home recording, DJ equipment,pro audio rigs and home entertainment systems SMP+ Series Multi-Stage Protection Plus for non sacrificial AC surge protection EVS, Extreme Voltage Shutdown LiFT offers AC power filtering to ensure clean power for unequaled audio & video clarity. Additionally, the P-1800 AR is a full-featured power conditioner that filters and purifies AC power This circuitry provides the highest level of power protection available.