Furman AR-20 Series II AC Line Voltage Regulator and Power Conditioner (USED) – Unit is in good condition, fully operational, minor rack wear, power supply uses specialized 20-amp plug (see pictures) The AR-Series regulators are designed specifically for any audio, video, or computer rackmount system requiring clean, filtered, and regulated AC power for optimum operation. Furman Voltage Regulators are intended to protect sensitive electronic equipment from problems caused by AC line voltage irregularities—brownouts or overvoltages that can cause audio tonal changes, digital equipment malfunction (such as loss of MIDI programs or other data), or, in extreme cases, permanent damage. They accept input voltages over a wide AC voltage range and convert them to a steady, stable output at the desired standard voltage, plus or minus five volts. Voltages approximately ±10% beyond that range may be converted to usable levels, depending on the requirements of the equipment. This stable voltage protects equipment and allows optimal performance. The AR-20 II has twelve outlets on the rear panel, and two convenience outlets on the front panel. All are functionally interchangeable. The outlets are regulated, surge-suppressed, and linearly filtered, making the unit a full-function power conditioner. The AR-20 II has no controls except an on-off switch / breaker and the button to switch the meter between voltage and current readings. Features Series Multi-Stage Protection Plus (SMP+) with extreme voltage shutdown (EVS) LiFT (Linear Filtering Technology) with zero ground contamination Extreme Voltage Shutdown indicator LED Output In Regulation indicator Digital meter displays incoming voltage or current Fast-acting user-accessible circuit breaker protects against overload or shorts Very low stray magnetic field leakage Input capacity is 20 A; output capacity is 12 to 20 A